/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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 [2020-10-29 14:47:46,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:47:46,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:47:46,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:47:46,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:47:46,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:47:46,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:47:46,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:47:46,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:47:46,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:47:46,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:47:46,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:47:46,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:47:46,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:47:46,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:47:46,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:47:46,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:47:46,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:47:46,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:47:46,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:47:46,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:47:46,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:47:46,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:47:46,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:47:46,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:47:46,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:47:46,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:47:46,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:47:46,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:47:46,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:47:46,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:47:46,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:47:46,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:47:46,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:47:46,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:47:46,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:47:46,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:47:46,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:47:46,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:47:46,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:47:46,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:47:46,980 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 [2020-10-29 14:47:47,007 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:47:47,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:47:47,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:47:47,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:47:47,009 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:47:47,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:47:47,010 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:47:47,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:47:47,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:47:47,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:47:47,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:47:47,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:47:47,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:47:47,011 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:47:47,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:47:47,012 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:47:47,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:47:47,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:47:47,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:47:47,013 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:47:47,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:47:47,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:47:47,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:47:47,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:47:47,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:47:47,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:47:47,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:47:47,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:47:47,015 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:47:47,015 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:47:47,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:47:47,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:47:47,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:47:47,418 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:47:47,418 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:47:47,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max.c [2020-10-29 14:47:47,520 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c910a26b/28ff3e7fc0104d1fa48f413f749d9290/FLAG470acba93 [2020-10-29 14:47:48,261 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:47:48,262 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/elimination_max.c [2020-10-29 14:47:48,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c910a26b/28ff3e7fc0104d1fa48f413f749d9290/FLAG470acba93 [2020-10-29 14:47:48,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c910a26b/28ff3e7fc0104d1fa48f413f749d9290 [2020-10-29 14:47:48,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:47:48,613 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:47:48,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:47:48,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:47:48,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:47:48,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:47:48" (1/1) ... [2020-10-29 14:47:48,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c7edff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:48, skipping insertion in model container [2020-10-29 14:47:48,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:47:48" (1/1) ... [2020-10-29 14:47:48,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:47:48,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:47:48,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:47:48,923 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:47:48,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:47:48,991 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:47:48,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:48 WrapperNode [2020-10-29 14:47:48,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:47:48,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:47:48,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:47:48,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:47:49,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:48" (1/1) ... [2020-10-29 14:47:49,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:48" (1/1) ... [2020-10-29 14:47:49,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:48" (1/1) ... [2020-10-29 14:47:49,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:48" (1/1) ... [2020-10-29 14:47:49,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:48" (1/1) ... [2020-10-29 14:47:49,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:48" (1/1) ... [2020-10-29 14:47:49,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:48" (1/1) ... [2020-10-29 14:47:49,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:47:49,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:47:49,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:47:49,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:47:49,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:48" (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 [2020-10-29 14:47:49,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:47:49,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:47:49,198 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:47:49,198 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 14:47:49,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 14:47:49,199 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:47:49,199 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-29 14:47:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 14:47:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 14:47:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:47:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:47:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:47:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:47:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 14:47:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 14:47:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 14:47:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:47:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 14:47:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-29 14:47:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:47:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:47:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:47:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:47:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:47:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:47:49,698 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:47:49,698 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-29 14:47:49,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:47:49 BoogieIcfgContainer [2020-10-29 14:47:49,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:47:49,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:47:49,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:47:49,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:47:49,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:47:48" (1/3) ... [2020-10-29 14:47:49,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0a1f52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:47:49, skipping insertion in model container [2020-10-29 14:47:49,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:48" (2/3) ... [2020-10-29 14:47:49,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0a1f52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:47:49, skipping insertion in model container [2020-10-29 14:47:49,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:47:49" (3/3) ... [2020-10-29 14:47:49,711 INFO L111 eAbstractionObserver]: Analyzing ICFG elimination_max.c [2020-10-29 14:47:49,725 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:47:49,731 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:47:49,745 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:47:49,774 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:47:49,774 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:47:49,774 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:47:49,774 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:47:49,774 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:47:49,775 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:47:49,775 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:47:49,775 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:47:49,793 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-10-29 14:47:49,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 14:47:49,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:47:49,801 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] [2020-10-29 14:47:49,801 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:47:49,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:47:49,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1990055374, now seen corresponding path program 1 times [2020-10-29 14:47:49,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:47:49,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930017879] [2020-10-29 14:47:49,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:47:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:50,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:50,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:50,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:50,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:50,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:50,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 14:47:50,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 14:47:50,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 918 [2020-10-29 14:47:50,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:50,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:50,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:47:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 14:47:50,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 14:47:50,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 14:47:51,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:47:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:51,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:51,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:51,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:47:51,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:51,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:47:51,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:51,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:51,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:47:51,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:51,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:47:51,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:47:51,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 14:47:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:51,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:51,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:51,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:51,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:47:51,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:47:51,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:47:51,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:51,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:51,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:47:51,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:51,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:47:51,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:47:51,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 14:47:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:51,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:51,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:51,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:47:51,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:51,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 14:47:51,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:51,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:51,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:47:51,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:51,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:47:51,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 14:47:51,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 14:47:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:51,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:51,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:51,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:51,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:47:51,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:47:51,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 14:47:51,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:51,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:51,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:47:51,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:51,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:47:51,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:47:51,286 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 14:47:51,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930017879] [2020-10-29 14:47:51,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:47:51,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 14:47:51,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454233450] [2020-10-29 14:47:51,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 14:47:51,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:47:51,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 14:47:51,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-29 14:47:51,317 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 10 states. [2020-10-29 14:47:51,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:47:51,995 INFO L93 Difference]: Finished difference Result 94 states and 125 transitions. [2020-10-29 14:47:51,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 14:47:51,997 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-10-29 14:47:51,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:47:52,007 INFO L225 Difference]: With dead ends: 94 [2020-10-29 14:47:52,007 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 14:47:52,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-10-29 14:47:52,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 14:47:52,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-10-29 14:47:52,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 14:47:52,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-10-29 14:47:52,063 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 30 [2020-10-29 14:47:52,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:47:52,063 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-10-29 14:47:52,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 14:47:52,063 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-10-29 14:47:52,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 14:47:52,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:47:52,066 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, 1, 1] [2020-10-29 14:47:52,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:47:52,066 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:47:52,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:47:52,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1929115515, now seen corresponding path program 1 times [2020-10-29 14:47:52,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:47:52,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646428027] [2020-10-29 14:47:52,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:47:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:52,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:52,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:52,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:52,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 14:47:52,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:47:52,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 858 [2020-10-29 14:47:52,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:52,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:52,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:47:52,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 14:47:52,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 14:47:52,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:47:53,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:47:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:53,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:53,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:53,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:47:53,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:53,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:47:53,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:53,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:53,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:47:53,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:53,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:47:53,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:47:53,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 14:47:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:53,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:53,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:53,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:47:53,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:53,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:47:53,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:53,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:53,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:47:53,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:53,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:47:53,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:47:53,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 14:47:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:53,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:53,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:53,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:47:53,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:53,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:47:53,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:53,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:53,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:47:53,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:53,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:47:53,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:47:53,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 14:47:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:53,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:53,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:53,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:47:53,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:53,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:47:53,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:53,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:53,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:47:53,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:53,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:47:53,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:47:53,227 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 14:47:53,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646428027] [2020-10-29 14:47:53,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:47:53,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 14:47:53,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458358730] [2020-10-29 14:47:53,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 14:47:53,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:47:53,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 14:47:53,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-29 14:47:53,232 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 10 states. [2020-10-29 14:47:53,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:47:53,795 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2020-10-29 14:47:53,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 14:47:53,795 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-10-29 14:47:53,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:47:53,798 INFO L225 Difference]: With dead ends: 52 [2020-10-29 14:47:53,799 INFO L226 Difference]: Without dead ends: 49 [2020-10-29 14:47:53,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-10-29 14:47:53,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-29 14:47:53,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39. [2020-10-29 14:47:53,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 14:47:53,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-29 14:47:53,811 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2020-10-29 14:47:53,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:47:53,811 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-29 14:47:53,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 14:47:53,812 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-29 14:47:53,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 14:47:53,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:47:53,813 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] [2020-10-29 14:47:53,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:47:53,814 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:47:53,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:47:53,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1700579112, now seen corresponding path program 1 times [2020-10-29 14:47:53,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:47:53,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309453910] [2020-10-29 14:47:53,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:47:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:53,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:53,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:54,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:54,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 14:47:54,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:47:54,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-29 14:47:54,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:54,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:54,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:47:54,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 14:47:54,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 14:47:54,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:47:54,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:47:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:54,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:54,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:54,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:47:54,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:54,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:47:54,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:54,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:47:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:47:54,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:47:54,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 14:47:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:54,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:54,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:54,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:47:54,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:54,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:47:54,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:54,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:54,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:47:54,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:54,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:47:54,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:47:54,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 14:47:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:54,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:54,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:54,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:47:54,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:54,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:47:54,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:54,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:54,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:47:54,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:54,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:47:54,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:47:54,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 14:47:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:54,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:54,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:54,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:47:54,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:54,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:47:54,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:54,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:54,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:47:54,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:54,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:47:54,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:47:54,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 14:47:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:54,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:54,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:54,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:47:54,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:54,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:47:54,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:54,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:54,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:47:54,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:54,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:47:54,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:47:54,277 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 14:47:54,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309453910] [2020-10-29 14:47:54,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:47:54,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 14:47:54,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899865423] [2020-10-29 14:47:54,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 14:47:54,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:47:54,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 14:47:54,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 14:47:54,280 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 9 states. [2020-10-29 14:47:54,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:47:54,688 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-10-29 14:47:54,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 14:47:54,689 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-10-29 14:47:54,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:47:54,691 INFO L225 Difference]: With dead ends: 61 [2020-10-29 14:47:54,691 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 14:47:54,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-10-29 14:47:54,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 14:47:54,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-10-29 14:47:54,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-29 14:47:54,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2020-10-29 14:47:54,703 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 37 [2020-10-29 14:47:54,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:47:54,704 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2020-10-29 14:47:54,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 14:47:54,704 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2020-10-29 14:47:54,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 14:47:54,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:47:54,706 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] [2020-10-29 14:47:54,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 14:47:54,706 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:47:54,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:47:54,707 INFO L82 PathProgramCache]: Analyzing trace with hash 605393003, now seen corresponding path program 1 times [2020-10-29 14:47:54,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:47:54,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546709412] [2020-10-29 14:47:54,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:47:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:54,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:54,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:55,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:55,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 14:47:55,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:47:55,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 744 [2020-10-29 14:47:55,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:55,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:55,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:47:55,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 14:47:55,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 14:47:55,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:47:55,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:47:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:55,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:55,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:55,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:47:55,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:55,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:47:55,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:55,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:55,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:47:55,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:55,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:47:55,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:47:55,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 14:47:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:55,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:55,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:55,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:47:55,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:55,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:47:55,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:55,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:55,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:47:55,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:55,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:47:55,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:47:55,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-29 14:47:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:55,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:55,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:55,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:47:55,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:55,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:47:55,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:55,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:55,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:47:55,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:55,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:47:55,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:47:55,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-29 14:47:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:55,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:55,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:55,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:47:55,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:55,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:47:55,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:55,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:55,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:47:55,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:55,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:47:55,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:47:55,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 14:47:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:55,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:55,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:55,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:47:55,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:55,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:47:55,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:55,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:55,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:47:55,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:55,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:47:55,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:47:55,702 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 14:47:55,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546709412] [2020-10-29 14:47:55,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:47:55,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 14:47:55,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944354166] [2020-10-29 14:47:55,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 14:47:55,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:47:55,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 14:47:55,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-29 14:47:55,705 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 10 states. [2020-10-29 14:47:56,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:47:56,164 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-10-29 14:47:56,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 14:47:56,165 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-10-29 14:47:56,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:47:56,166 INFO L225 Difference]: With dead ends: 52 [2020-10-29 14:47:56,166 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 14:47:56,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-10-29 14:47:56,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 14:47:56,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 14:47:56,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 14:47:56,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 14:47:56,168 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2020-10-29 14:47:56,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:47:56,168 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 14:47:56,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 14:47:56,168 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 14:47:56,168 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 14:47:56,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:47:56,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 14:47:56,510 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 5) no Hoare annotation was computed. [2020-10-29 14:47:56,510 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 5) the Hoare annotation is: true [2020-10-29 14:47:56,510 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 5) no Hoare annotation was computed. [2020-10-29 14:47:56,510 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-10-29 14:47:56,510 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-29 14:47:56,511 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|)) [2020-10-29 14:47:56,511 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-29 14:47:56,511 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-29 14:47:56,511 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-29 14:47:56,511 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-29 14:47:56,511 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-29 14:47:56,512 INFO L277 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2020-10-29 14:47:56,512 INFO L274 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-29 14:47:56,512 INFO L274 CegarLoopResult]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2020-10-29 14:47:56,512 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2020-10-29 14:47:56,512 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|)))) [2020-10-29 14:47:56,512 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 16 51) no Hoare annotation was computed. [2020-10-29 14:47:56,512 INFO L274 CegarLoopResult]: For program point L25-2(lines 25 37) no Hoare annotation was computed. [2020-10-29 14:47:56,512 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|)) [2020-10-29 14:47:56,513 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-29 14:47:56,513 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|)))) [2020-10-29 14:47:56,513 INFO L274 CegarLoopResult]: For program point L46-1(line 46) no Hoare annotation was computed. [2020-10-29 14:47:56,513 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 16 51) no Hoare annotation was computed. [2020-10-29 14:47:56,513 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|)))) [2020-10-29 14:47:56,513 INFO L274 CegarLoopResult]: For program point L42-1(line 42) no Hoare annotation was computed. [2020-10-29 14:47:56,513 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|)) [2020-10-29 14:47:56,514 INFO L270 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-10-29 14:47:56,514 INFO L274 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-10-29 14:47:56,514 INFO L270 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (let ((.cse1 ((as const (Array Int Int)) 0)) (.cse0 (= |main_#t~mem16| 1))) (and (or .cse0 (= |main_#t~mem16| 0)) (= (select |#memory_int| main_~a~0.base) .cse1) (= .cse1 (select |#memory_int| |main_#t~malloc9.base|)) (let ((.cse2 (<= |main_#t~mem15| |main_#t~mem16|))) (or (= |main_#t~mem15| 0) (and (= |main_#t~mem15| 1) .cse2) (and .cse2 (not .cse0)))))) [2020-10-29 14:47:56,514 INFO L274 CegarLoopResult]: For program point L45-2(lines 45 47) no Hoare annotation was computed. [2020-10-29 14:47:56,514 INFO L274 CegarLoopResult]: For program point L43-1(line 43) no Hoare annotation was computed. [2020-10-29 14:47:56,514 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|)))) [2020-10-29 14:47:56,514 INFO L274 CegarLoopResult]: For program point L45-4(lines 45 47) no Hoare annotation was computed. [2020-10-29 14:47:56,515 INFO L274 CegarLoopResult]: For program point L35(lines 35 36) no Hoare annotation was computed. [2020-10-29 14:47:56,515 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 10 12) the Hoare annotation is: true [2020-10-29 14:47:56,515 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-10-29 14:47:56,515 INFO L270 CegarLoopResult]: At program point L11-1(line 11) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-29 14:47:56,515 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 10 12) no Hoare annotation was computed. [2020-10-29 14:47:56,515 INFO L274 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-10-29 14:47:56,515 INFO L274 CegarLoopResult]: For program point L11-4(lines 10 12) no Hoare annotation was computed. [2020-10-29 14:47:56,515 INFO L270 CegarLoopResult]: At program point #Ultimate.meminitENTRY(line -1) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-10-29 14:47:56,515 INFO L274 CegarLoopResult]: For program point #Ultimate.meminitEXIT(line -1) no Hoare annotation was computed. [2020-10-29 14:47:56,516 INFO L274 CegarLoopResult]: For program point #Ultimate.meminitFINAL(line -1) no Hoare annotation was computed. [2020-10-29 14:47:56,523 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) [2020-10-29 14:47:56,528 INFO L168 Benchmark]: Toolchain (without parser) took 7919.82 ms. Allocated memory was 155.2 MB in the beginning and 226.5 MB in the end (delta: 71.3 MB). Free memory was 130.2 MB in the beginning and 120.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 82.6 MB. Max. memory is 8.0 GB. [2020-10-29 14:47:56,529 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 155.2 MB. Free memory is still 128.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 14:47:56,530 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.76 ms. Allocated memory is still 155.2 MB. Free memory was 129.6 MB in the beginning and 119.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 14:47:56,531 INFO L168 Benchmark]: Boogie Preprocessor took 93.22 ms. Allocated memory is still 155.2 MB. Free memory was 119.4 MB in the beginning and 117.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 14:47:56,532 INFO L168 Benchmark]: RCFGBuilder took 611.97 ms. Allocated memory is still 155.2 MB. Free memory was 117.6 MB in the beginning and 134.3 MB in the end (delta: -16.7 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. [2020-10-29 14:47:56,533 INFO L168 Benchmark]: TraceAbstraction took 6823.47 ms. Allocated memory was 155.2 MB in the beginning and 226.5 MB in the end (delta: 71.3 MB). Free memory was 133.8 MB in the beginning and 120.1 MB in the end (delta: 13.7 MB). Peak memory consumption was 85.5 MB. Max. memory is 8.0 GB. [2020-10-29 14:47:56,536 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 155.2 MB. Free memory is still 128.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 378.76 ms. Allocated memory is still 155.2 MB. Free memory was 129.6 MB in the beginning and 119.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 93.22 ms. Allocated memory is still 155.2 MB. Free memory was 119.4 MB in the beginning and 117.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 611.97 ms. Allocated memory is still 155.2 MB. Free memory was 117.6 MB in the beginning and 134.3 MB in the end (delta: -16.7 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6823.47 ms. Allocated memory was 155.2 MB in the beginning and 226.5 MB in the end (delta: 71.3 MB). Free memory was 133.8 MB in the beginning and 120.1 MB in the end (delta: 13.7 MB). Peak memory consumption was 85.5 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...