/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/verifythis/elimination_max.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 20:01:57,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 20:01:57,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 20:01:57,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 20:01:57,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 20:01:57,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 20:01:57,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 20:01:57,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 20:01:57,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 20:01:57,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 20:01:57,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 20:01:57,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 20:01:57,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 20:01:57,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 20:01:57,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 20:01:57,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 20:01:57,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 20:01:57,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 20:01:57,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 20:01:57,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 20:01:57,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 20:01:57,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 20:01:57,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 20:01:57,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 20:01:57,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 20:01:57,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 20:01:57,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 20:01:57,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 20:01:57,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 20:01:57,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 20:01:57,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 20:01:57,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 20:01:57,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 20:01:57,129 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 20:01:57,131 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 20:01:57,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 20:01:57,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 20:01:57,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 20:01:57,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 20:01:57,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 20:01:57,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 20:01:57,137 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 20:01:57,201 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 20:01:57,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 20:01:57,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 20:01:57,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 20:01:57,205 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 20:01:57,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 20:01:57,206 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 20:01:57,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 20:01:57,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 20:01:57,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 20:01:57,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 20:01:57,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 20:01:57,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 20:01:57,209 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 20:01:57,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 20:01:57,209 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 20:01:57,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 20:01:57,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 20:01:57,224 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 20:01:57,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 20:01:57,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 20:01:57,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 20:01:57,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 20:01:57,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 20:01:57,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 20:01:57,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 20:01:57,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 20:01:57,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 20:01:57,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 20:01:57,227 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 20:01:57,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 20:01:57,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 20:01:57,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 20:01:57,702 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 20:01:57,705 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 20:01:57,706 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max.c [2020-10-28 20:01:57,807 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66322031e/b038d5a44e8e496cb6264d49c528c163/FLAG74a64b72e [2020-10-28 20:01:58,420 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 20:01:58,421 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/elimination_max.c [2020-10-28 20:01:58,430 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66322031e/b038d5a44e8e496cb6264d49c528c163/FLAG74a64b72e [2020-10-28 20:01:58,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66322031e/b038d5a44e8e496cb6264d49c528c163 [2020-10-28 20:01:58,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 20:01:58,770 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 20:01:58,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 20:01:58,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 20:01:58,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 20:01:58,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:01:58" (1/1) ... [2020-10-28 20:01:58,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a6871c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:01:58, skipping insertion in model container [2020-10-28 20:01:58,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:01:58" (1/1) ... [2020-10-28 20:01:58,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 20:01:58,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 20:01:58,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 20:01:59,009 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 20:01:59,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 20:01:59,051 INFO L208 MainTranslator]: Completed translation [2020-10-28 20:01:59,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:01:59 WrapperNode [2020-10-28 20:01:59,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 20:01:59,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 20:01:59,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 20:01:59,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 20:01:59,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:01:59" (1/1) ... [2020-10-28 20:01:59,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:01:59" (1/1) ... [2020-10-28 20:01:59,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:01:59" (1/1) ... [2020-10-28 20:01:59,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:01:59" (1/1) ... [2020-10-28 20:01:59,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:01:59" (1/1) ... [2020-10-28 20:01:59,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:01:59" (1/1) ... [2020-10-28 20:01:59,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:01:59" (1/1) ... [2020-10-28 20:01:59,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 20:01:59,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 20:01:59,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 20:01:59,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 20:01:59,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:01:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 20:01:59,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 20:01:59,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 20:01:59,187 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 20:01:59,187 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 20:01:59,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 20:01:59,187 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 20:01:59,187 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-28 20:01:59,187 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 20:01:59,188 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 20:01:59,188 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 20:01:59,188 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 20:01:59,188 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 20:01:59,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 20:01:59,189 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 20:01:59,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 20:01:59,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 20:01:59,189 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 20:01:59,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 20:01:59,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-28 20:01:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 20:01:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 20:01:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 20:01:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 20:01:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 20:01:59,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 20:01:59,774 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 20:01:59,775 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 20:01:59,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:01:59 BoogieIcfgContainer [2020-10-28 20:01:59,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 20:01:59,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 20:01:59,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 20:01:59,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 20:01:59,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:01:58" (1/3) ... [2020-10-28 20:01:59,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429bce0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:01:59, skipping insertion in model container [2020-10-28 20:01:59,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:01:59" (2/3) ... [2020-10-28 20:01:59,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429bce0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:01:59, skipping insertion in model container [2020-10-28 20:01:59,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:01:59" (3/3) ... [2020-10-28 20:01:59,790 INFO L111 eAbstractionObserver]: Analyzing ICFG elimination_max.c [2020-10-28 20:01:59,809 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 20:01:59,815 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 20:01:59,830 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 20:01:59,873 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 20:01:59,874 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 20:01:59,874 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 20:01:59,874 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 20:01:59,874 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 20:01:59,874 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 20:01:59,875 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 20:01:59,875 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 20:01:59,900 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-10-28 20:01:59,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-28 20:01:59,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:01:59,912 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 20:01:59,912 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:01:59,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:01:59,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1990055374, now seen corresponding path program 1 times [2020-10-28 20:01:59,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:01:59,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108127271] [2020-10-28 20:01:59,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:00,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:00,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:00,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:00,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:00,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:00,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 20:02:00,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 20:02:00,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 820 [2020-10-28 20:02:00,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:00,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:00,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:00,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 20:02:00,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:00,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 20:02:01,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:02:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:01,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:01,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:01,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:01,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:01,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 20:02:01,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:01,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:01,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:01,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:01,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:01,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:01,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:01,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:01,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:01,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:01,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:01,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:02:01,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 20:02:01,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:01,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:01,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:01,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:01,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:01,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:01,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 20:02:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:01,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:01,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:01,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:01,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:01,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 20:02:01,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:01,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:01,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:01,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:01,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:01,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:01,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 20:02:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:01,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:01,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:01,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:01,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:01,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:02:01,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 20:02:01,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:01,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:01,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:01,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 20:02:01,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:01,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:01,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 20:02:01,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108127271] [2020-10-28 20:02:01,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 20:02:01,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 20:02:01,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611937629] [2020-10-28 20:02:01,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 20:02:01,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:02:01,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 20:02:01,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 20:02:01,177 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 4 states. [2020-10-28 20:02:01,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:02:01,461 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2020-10-28 20:02:01,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 20:02:01,464 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-28 20:02:01,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:02:01,473 INFO L225 Difference]: With dead ends: 76 [2020-10-28 20:02:01,473 INFO L226 Difference]: Without dead ends: 35 [2020-10-28 20:02:01,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 20:02:01,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-28 20:02:01,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-28 20:02:01,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-28 20:02:01,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-28 20:02:01,528 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 30 [2020-10-28 20:02:01,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:02:01,528 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-28 20:02:01,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 20:02:01,529 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-28 20:02:01,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-28 20:02:01,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:02:01,531 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 20:02:01,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 20:02:01,531 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:02:01,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:02:01,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1842887784, now seen corresponding path program 1 times [2020-10-28 20:02:01,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:02:01,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943097924] [2020-10-28 20:02:01,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:01,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:01,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:02,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:02,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 20:02:02,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:02:02,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-10-28 20:02:02,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:02,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:02,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 20:02:02,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 20:02:02,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 20:02:02,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:02,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:02:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:02,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:02,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:02,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:02,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:02,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 20:02:02,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:02,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:02,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:02,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:02,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:02,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:02,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:02,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:02,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:02,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:02,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:02,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:02:02,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:02,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:02,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:02,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:02,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:02,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:02,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 20:02:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:02,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:02,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:02,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:02,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:02,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 20:02:02,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:02,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:02,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 20:02:02,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:02,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:02,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:02,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 20:02:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:02,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:02,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:02,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:02,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:02,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 20:02:02,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:02,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:02,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:02,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:02,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:02,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:02,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 20:02:02,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943097924] [2020-10-28 20:02:02,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 20:02:02,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 20:02:02,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375831357] [2020-10-28 20:02:02,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 20:02:02,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:02:02,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 20:02:02,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-28 20:02:02,767 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 10 states. [2020-10-28 20:02:03,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:02:03,579 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2020-10-28 20:02:03,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 20:02:03,580 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-10-28 20:02:03,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:02:03,582 INFO L225 Difference]: With dead ends: 42 [2020-10-28 20:02:03,582 INFO L226 Difference]: Without dead ends: 39 [2020-10-28 20:02:03,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-10-28 20:02:03,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-28 20:02:03,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-28 20:02:03,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-28 20:02:03,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-28 20:02:03,595 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 30 [2020-10-28 20:02:03,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:02:03,596 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-28 20:02:03,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 20:02:03,597 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-28 20:02:03,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 20:02:03,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:02:03,598 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] [2020-10-28 20:02:03,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 20:02:03,599 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:02:03,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:02:03,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1700579112, now seen corresponding path program 1 times [2020-10-28 20:02:03,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:02:03,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615925915] [2020-10-28 20:02:03,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:03,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:03,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:03,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:03,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-28 20:02:03,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:02:03,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-28 20:02:03,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:03,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:03,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 20:02:03,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 20:02:03,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 20:02:03,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:04,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:02:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:04,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:04,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:04,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:04,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:04,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 20:02:04,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:04,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:04,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:04,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:04,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:04,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:04,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:04,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:04,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:04,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:04,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:04,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 20:02:04,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:04,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:04,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:04,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:04,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:04,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:04,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 20:02:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:04,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:04,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:04,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:04,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:04,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 20:02:04,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:04,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:04,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 20:02:04,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:04,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:04,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:04,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 20:02:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:04,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:04,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:04,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:04,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:04,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 20:02:04,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:04,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:04,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:04,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:04,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:04,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:04,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 20:02:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:04,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:04,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:04,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:04,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:04,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 20:02:04,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:04,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:04,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:04,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:04,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:04,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:04,307 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 20:02:04,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615925915] [2020-10-28 20:02:04,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 20:02:04,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 20:02:04,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404681468] [2020-10-28 20:02:04,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 20:02:04,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:02:04,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 20:02:04,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-28 20:02:04,313 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 10 states. [2020-10-28 20:02:05,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:02:05,167 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2020-10-28 20:02:05,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 20:02:05,167 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2020-10-28 20:02:05,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:02:05,169 INFO L225 Difference]: With dead ends: 57 [2020-10-28 20:02:05,169 INFO L226 Difference]: Without dead ends: 41 [2020-10-28 20:02:05,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-10-28 20:02:05,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-28 20:02:05,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-28 20:02:05,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-28 20:02:05,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-28 20:02:05,180 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 37 [2020-10-28 20:02:05,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:02:05,181 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-28 20:02:05,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 20:02:05,181 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-28 20:02:05,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 20:02:05,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 20:02:05,183 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] [2020-10-28 20:02:05,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 20:02:05,184 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 20:02:05,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 20:02:05,185 INFO L82 PathProgramCache]: Analyzing trace with hash 605393003, now seen corresponding path program 1 times [2020-10-28 20:02:05,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 20:02:05,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003795895] [2020-10-28 20:02:05,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 20:02:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:05,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:05,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:06,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:06,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 20:02:06,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 20:02:06,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 915 [2020-10-28 20:02:06,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:06,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:06,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 20:02:06,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 20:02:06,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 20:02:06,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:06,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 20:02:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:06,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:06,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:06,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:06,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:06,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:02:06,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:06,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:06,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:06,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:06,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:06,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 20:02:06,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 20:02:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:06,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:06,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:06,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:06,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:06,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 20:02:06,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:06,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:06,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 20:02:06,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:06,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 20:02:06,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:06,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 20:02:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:06,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:06,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:06,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 20:02:06,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:06,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:02:06,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:06,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:06,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 20:02:06,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:06,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:06,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:06,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 20:02:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:06,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:06,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:06,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:06,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:06,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 20:02:06,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:06,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:06,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:06,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:06,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:06,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:06,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 20:02:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 20:02:06,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 20:02:06,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 20:02:06,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 20:02:06,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 20:02:06,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 20:02:06,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 20:02:06,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 20:02:06,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 20:02:06,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 20:02:06,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 20:02:06,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 20:02:06,368 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 20:02:06,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003795895] [2020-10-28 20:02:06,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 20:02:06,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 20:02:06,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288755952] [2020-10-28 20:02:06,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 20:02:06,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 20:02:06,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 20:02:06,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-28 20:02:06,371 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 10 states. [2020-10-28 20:02:07,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 20:02:07,000 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-10-28 20:02:07,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 20:02:07,001 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-10-28 20:02:07,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 20:02:07,001 INFO L225 Difference]: With dead ends: 41 [2020-10-28 20:02:07,002 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 20:02:07,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-10-28 20:02:07,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 20:02:07,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 20:02:07,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 20:02:07,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 20:02:07,003 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2020-10-28 20:02:07,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 20:02:07,004 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 20:02:07,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 20:02:07,004 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 20:02:07,004 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 20:02:07,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 20:02:07,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 20:02:07,410 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 5) no Hoare annotation was computed. [2020-10-28 20:02:07,410 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 5) the Hoare annotation is: true [2020-10-28 20:02:07,411 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 5) no Hoare annotation was computed. [2020-10-28 20:02:07,411 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-10-28 20:02:07,411 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 20:02:07,411 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#t~string6.offset)| |#t~string6.offset|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |#t~string7.offset| |old(#t~string7.offset)|) (= |old(#t~string7.base)| |#t~string7.base|) (= |old(#valid)| |#valid|)) [2020-10-28 20:02:07,412 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 20:02:07,412 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 20:02:07,412 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 20:02:07,412 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 20:02:07,412 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 20:02:07,412 INFO L277 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2020-10-28 20:02:07,412 INFO L274 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-28 20:02:07,413 INFO L274 CegarLoopResult]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2020-10-28 20:02:07,413 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2020-10-28 20:02:07,413 INFO L270 CegarLoopResult]: At program point L35-2(lines 25 37) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc9.base|)))) [2020-10-28 20:02:07,413 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 16 51) no Hoare annotation was computed. [2020-10-28 20:02:07,413 INFO L274 CegarLoopResult]: For program point L25-2(lines 25 37) no Hoare annotation was computed. [2020-10-28 20:02:07,413 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-10-28 20:02:07,413 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-28 20:02:07,414 INFO L270 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= |main_#t~mem19| |main_#t~mem18|) (= .cse0 (select |#memory_int| |main_#t~malloc9.base|)))) [2020-10-28 20:02:07,414 INFO L274 CegarLoopResult]: For program point L46-1(line 46) no Hoare annotation was computed. [2020-10-28 20:02:07,414 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 16 51) no Hoare annotation was computed. [2020-10-28 20:02:07,414 INFO L270 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc9.base|)))) [2020-10-28 20:02:07,414 INFO L274 CegarLoopResult]: For program point L42-1(line 42) no Hoare annotation was computed. [2020-10-28 20:02:07,414 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 16 51) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-10-28 20:02:07,415 INFO L270 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-10-28 20:02:07,415 INFO L274 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-10-28 20:02:07,415 INFO L270 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= |main_#t~mem16| |main_#t~mem15|) (= .cse0 (select |#memory_int| |main_#t~malloc9.base|)))) [2020-10-28 20:02:07,415 INFO L274 CegarLoopResult]: For program point L45-2(lines 45 47) no Hoare annotation was computed. [2020-10-28 20:02:07,415 INFO L274 CegarLoopResult]: For program point L43-1(line 43) no Hoare annotation was computed. [2020-10-28 20:02:07,415 INFO L270 CegarLoopResult]: At program point L45-3(lines 45 47) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc9.base|)))) [2020-10-28 20:02:07,416 INFO L274 CegarLoopResult]: For program point L45-4(lines 45 47) no Hoare annotation was computed. [2020-10-28 20:02:07,416 INFO L274 CegarLoopResult]: For program point L35(lines 35 36) no Hoare annotation was computed. [2020-10-28 20:02:07,416 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 10 12) the Hoare annotation is: true [2020-10-28 20:02:07,416 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-10-28 20:02:07,416 INFO L270 CegarLoopResult]: At program point L11-1(line 11) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-28 20:02:07,416 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 10 12) no Hoare annotation was computed. [2020-10-28 20:02:07,416 INFO L274 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-10-28 20:02:07,416 INFO L274 CegarLoopResult]: For program point L11-4(lines 10 12) no Hoare annotation was computed. [2020-10-28 20:02:07,417 INFO L270 CegarLoopResult]: At program point #Ultimate.meminitENTRY(line -1) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-10-28 20:02:07,417 INFO L274 CegarLoopResult]: For program point #Ultimate.meminitEXIT(line -1) no Hoare annotation was computed. [2020-10-28 20:02:07,417 INFO L274 CegarLoopResult]: For program point #Ultimate.meminitFINAL(line -1) no Hoare annotation was computed. [2020-10-28 20:02:07,426 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:238) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:707) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:267) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-28 20:02:07,430 INFO L168 Benchmark]: Toolchain (without parser) took 8663.25 ms. Allocated memory was 151.0 MB in the beginning and 225.4 MB in the end (delta: 74.4 MB). Free memory was 127.5 MB in the beginning and 96.2 MB in the end (delta: 31.3 MB). Peak memory consumption was 106.2 MB. Max. memory is 8.0 GB. [2020-10-28 20:02:07,431 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 126.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 20:02:07,432 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.93 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 116.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-28 20:02:07,433 INFO L168 Benchmark]: Boogie Preprocessor took 44.82 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 114.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 20:02:07,434 INFO L168 Benchmark]: RCFGBuilder took 679.47 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 97.7 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-10-28 20:02:07,435 INFO L168 Benchmark]: TraceAbstraction took 7646.10 ms. Allocated memory was 151.0 MB in the beginning and 225.4 MB in the end (delta: 74.4 MB). Free memory was 97.1 MB in the beginning and 96.2 MB in the end (delta: 864.4 kB). Peak memory consumption was 75.7 MB. Max. memory is 8.0 GB. [2020-10-28 20:02:07,438 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 126.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 277.93 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 116.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.82 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 114.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 679.47 ms. Allocated memory is still 151.0 MB. Free memory was 114.9 MB in the beginning and 97.7 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7646.10 ms. Allocated memory was 151.0 MB in the beginning and 225.4 MB in the end (delta: 74.4 MB). Free memory was 97.1 MB in the beginning and 96.2 MB in the end (delta: 864.4 kB). Peak memory consumption was 75.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:238) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...