/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/s42if.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 18:15:11,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 18:15:11,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 18:15:12,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 18:15:12,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 18:15:12,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 18:15:12,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 18:15:12,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 18:15:12,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 18:15:12,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 18:15:12,013 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 18:15:12,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 18:15:12,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 18:15:12,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 18:15:12,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 18:15:12,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 18:15:12,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 18:15:12,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 18:15:12,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 18:15:12,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 18:15:12,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 18:15:12,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 18:15:12,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 18:15:12,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 18:15:12,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 18:15:12,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 18:15:12,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 18:15:12,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 18:15:12,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 18:15:12,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 18:15:12,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 18:15:12,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 18:15:12,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 18:15:12,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 18:15:12,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 18:15:12,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 18:15:12,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 18:15:12,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 18:15:12,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 18:15:12,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 18:15:12,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 18:15:12,066 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 [2020-10-14 18:15:12,113 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 18:15:12,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 18:15:12,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 18:15:12,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 18:15:12,117 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 18:15:12,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 18:15:12,118 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 18:15:12,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 18:15:12,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 18:15:12,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 18:15:12,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 18:15:12,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 18:15:12,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 18:15:12,121 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 18:15:12,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 18:15:12,121 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 18:15:12,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 18:15:12,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 18:15:12,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 18:15:12,122 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 18:15:12,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 18:15:12,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:15:12,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 18:15:12,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 18:15:12,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 18:15:12,123 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 18:15:12,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 18:15:12,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 18:15:12,124 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 18:15:12,124 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 18:15:12,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 18:15:12,451 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 18:15:12,455 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 18:15:12,457 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 18:15:12,458 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 18:15:12,459 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s42if.c [2020-10-14 18:15:12,545 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d75fea96c/66a53823837c4ce1b715225acacce266/FLAG16f29644a [2020-10-14 18:15:13,064 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 18:15:13,065 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s42if.c [2020-10-14 18:15:13,074 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d75fea96c/66a53823837c4ce1b715225acacce266/FLAG16f29644a [2020-10-14 18:15:13,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d75fea96c/66a53823837c4ce1b715225acacce266 [2020-10-14 18:15:13,448 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 18:15:13,449 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 18:15:13,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 18:15:13,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 18:15:13,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 18:15:13,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:15:13" (1/1) ... [2020-10-14 18:15:13,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc51459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:15:13, skipping insertion in model container [2020-10-14 18:15:13,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:15:13" (1/1) ... [2020-10-14 18:15:13,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 18:15:13,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 18:15:13,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:15:13,689 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 18:15:13,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:15:13,728 INFO L208 MainTranslator]: Completed translation [2020-10-14 18:15:13,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:15:13 WrapperNode [2020-10-14 18:15:13,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 18:15:13,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 18:15:13,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 18:15:13,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 18:15:13,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:15:13" (1/1) ... [2020-10-14 18:15:13,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:15:13" (1/1) ... [2020-10-14 18:15:13,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:15:13" (1/1) ... [2020-10-14 18:15:13,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:15:13" (1/1) ... [2020-10-14 18:15:13,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:15:13" (1/1) ... [2020-10-14 18:15:13,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:15:13" (1/1) ... [2020-10-14 18:15:13,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:15:13" (1/1) ... [2020-10-14 18:15:13,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 18:15:13,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 18:15:13,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 18:15:13,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 18:15:13,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:15:13" (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 [2020-10-14 18:15:13,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 18:15:13,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 18:15:13,938 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 18:15:13,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 18:15:13,938 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 18:15:13,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 18:15:13,938 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 18:15:13,939 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 18:15:13,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 18:15:13,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 18:15:13,939 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 18:15:13,939 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 18:15:13,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 18:15:13,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 18:15:13,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 18:15:13,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 18:15:13,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 18:15:13,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 18:15:13,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 18:15:14,242 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 18:15:14,242 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 18:15:14,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:15:14 BoogieIcfgContainer [2020-10-14 18:15:14,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 18:15:14,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 18:15:14,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 18:15:14,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 18:15:14,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:15:13" (1/3) ... [2020-10-14 18:15:14,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc7a949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:15:14, skipping insertion in model container [2020-10-14 18:15:14,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:15:13" (2/3) ... [2020-10-14 18:15:14,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc7a949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:15:14, skipping insertion in model container [2020-10-14 18:15:14,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:15:14" (3/3) ... [2020-10-14 18:15:14,259 INFO L109 eAbstractionObserver]: Analyzing ICFG s42if.c [2020-10-14 18:15:14,274 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 18:15:14,290 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 18:15:14,320 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 18:15:14,348 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 18:15:14,355 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 18:15:14,355 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 18:15:14,356 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 18:15:14,356 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 18:15:14,356 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 18:15:14,356 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 18:15:14,357 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 18:15:14,377 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-14 18:15:14,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 18:15:14,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:15:14,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:15:14,384 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:15:14,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:15:14,390 INFO L82 PathProgramCache]: Analyzing trace with hash 2033030480, now seen corresponding path program 1 times [2020-10-14 18:15:14,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:15:14,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529003401] [2020-10-14 18:15:14,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:15:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:15:14,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:15:14,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:15:14,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:15:14,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:15:15,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:15:15,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 18:15:15,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:15:15,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 624 [2020-10-14 18:15:15,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:15:15,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:15:15,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:15:15,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:15:15,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 18:15:15,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 18:15:15,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:15:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:15:15,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:15:15,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:15:15,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:15:15,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:15:15,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:15:15,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:15:15,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:15:15,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:15:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:15:15,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:15:15,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:15:15,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:15:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:15:15,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:15:15,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:15:15,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:15:15,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:15:15,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:15:15,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:15:15,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:15:15,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:15:15,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:15:15,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:15:15,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:15:15,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:15:15,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:15:15,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529003401] [2020-10-14 18:15:15,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:15:15,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 18:15:15,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085372895] [2020-10-14 18:15:15,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 18:15:15,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:15:15,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 18:15:15,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:15:15,280 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 5 states. [2020-10-14 18:15:15,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:15:15,511 INFO L93 Difference]: Finished difference Result 69 states and 93 transitions. [2020-10-14 18:15:15,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 18:15:15,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-14 18:15:15,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:15:15,522 INFO L225 Difference]: With dead ends: 69 [2020-10-14 18:15:15,523 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 18:15:15,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 18:15:15,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 18:15:15,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-14 18:15:15,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 18:15:15,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-14 18:15:15,572 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2020-10-14 18:15:15,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:15:15,572 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-14 18:15:15,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 18:15:15,572 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-14 18:15:15,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 18:15:15,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:15:15,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:15:15,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 18:15:15,575 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:15:15,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:15:15,575 INFO L82 PathProgramCache]: Analyzing trace with hash 284203188, now seen corresponding path program 1 times [2020-10-14 18:15:15,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:15:15,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076402928] [2020-10-14 18:15:15,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:15:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:15:15,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:15:15,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:15:16,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:15:16,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:15:16,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:15:16,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:15:16,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:15:16,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:15:16,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:15:19,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:15:19,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 18:15:19,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 18:15:19,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3685 [2020-10-14 18:15:19,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:15:19,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:15:19,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:15:19,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 18:15:19,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 18:15:19,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:15:19,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:15:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:15:19,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:15:19,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:15:19,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:15:19,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:15:19,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:15:19,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:15:19,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:15:19,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:15:19,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:15:19,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:15:19,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:15:19,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:15:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:15:19,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:15:19,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:15:19,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:15:19,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:15:19,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:15:19,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:15:19,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:15:19,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:15:19,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:15:19,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:15:19,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:15:19,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 18:15:19,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076402928] [2020-10-14 18:15:19,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:15:19,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 18:15:19,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369085541] [2020-10-14 18:15:19,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 18:15:19,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:15:19,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 18:15:19,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:15:19,678 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 12 states. [2020-10-14 18:15:20,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:15:20,461 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2020-10-14 18:15:20,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 18:15:20,462 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2020-10-14 18:15:20,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:15:20,466 INFO L225 Difference]: With dead ends: 60 [2020-10-14 18:15:20,466 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 18:15:20,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:15:20,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 18:15:20,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 45. [2020-10-14 18:15:20,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-14 18:15:20,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-14 18:15:20,480 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 31 [2020-10-14 18:15:20,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:15:20,480 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-14 18:15:20,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 18:15:20,481 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-14 18:15:20,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 18:15:20,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:15:20,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:15:20,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 18:15:20,483 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:15:20,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:15:20,483 INFO L82 PathProgramCache]: Analyzing trace with hash -525143438, now seen corresponding path program 1 times [2020-10-14 18:15:20,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:15:20,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326247486] [2020-10-14 18:15:20,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:15:20,495 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-14 18:15:20,495 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-14 18:15:20,495 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 18:15:20,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 18:15:20,517 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-14 18:15:20,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 06:15:20 BoogieIcfgContainer [2020-10-14 18:15:20,517 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 18:15:20,520 INFO L168 Benchmark]: Toolchain (without parser) took 7070.25 ms. Allocated memory was 145.8 MB in the beginning and 284.2 MB in the end (delta: 138.4 MB). Free memory was 101.9 MB in the beginning and 103.7 MB in the end (delta: -1.8 MB). Peak memory consumption was 136.7 MB. Max. memory is 7.1 GB. [2020-10-14 18:15:20,521 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-14 18:15:20,522 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.54 ms. Allocated memory is still 145.8 MB. Free memory was 101.5 MB in the beginning and 90.3 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2020-10-14 18:15:20,523 INFO L168 Benchmark]: Boogie Preprocessor took 134.89 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 90.3 MB in the beginning and 179.7 MB in the end (delta: -89.4 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-10-14 18:15:20,524 INFO L168 Benchmark]: RCFGBuilder took 384.95 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 160.9 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2020-10-14 18:15:20,526 INFO L168 Benchmark]: TraceAbstraction took 6266.16 ms. Allocated memory was 202.4 MB in the beginning and 284.2 MB in the end (delta: 81.8 MB). Free memory was 160.9 MB in the beginning and 103.7 MB in the end (delta: 57.2 MB). Peak memory consumption was 139.0 MB. Max. memory is 7.1 GB. [2020-10-14 18:15:20,530 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 278.54 ms. Allocated memory is still 145.8 MB. Free memory was 101.5 MB in the beginning and 90.3 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.89 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 90.3 MB in the beginning and 179.7 MB in the end (delta: -89.4 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 384.95 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 160.9 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6266.16 ms. Allocated memory was 202.4 MB in the beginning and 284.2 MB in the end (delta: 81.8 MB). Free memory was 160.9 MB in the beginning and 103.7 MB in the end (delta: 57.2 MB). Peak memory consumption was 139.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i