/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/condaf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 18:08:23,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 18:08:23,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 18:08:23,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 18:08:23,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 18:08:23,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 18:08:23,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 18:08:23,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 18:08:23,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 18:08:23,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 18:08:23,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 18:08:23,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 18:08:23,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 18:08:23,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 18:08:23,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 18:08:23,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 18:08:23,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 18:08:23,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 18:08:23,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 18:08:23,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 18:08:23,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 18:08:24,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 18:08:24,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 18:08:24,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 18:08:24,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 18:08:24,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 18:08:24,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 18:08:24,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 18:08:24,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 18:08:24,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 18:08:24,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 18:08:24,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 18:08:24,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 18:08:24,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 18:08:24,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 18:08:24,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 18:08:24,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 18:08:24,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 18:08:24,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 18:08:24,024 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 18:08:24,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 18:08:24,026 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 18:08:24,063 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 18:08:24,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 18:08:24,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 18:08:24,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 18:08:24,066 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 18:08:24,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 18:08:24,067 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 18:08:24,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 18:08:24,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 18:08:24,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 18:08:24,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 18:08:24,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 18:08:24,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 18:08:24,069 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 18:08:24,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 18:08:24,070 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 18:08:24,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 18:08:24,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 18:08:24,070 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 18:08:24,070 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 18:08:24,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 18:08:24,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:08:24,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 18:08:24,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 18:08:24,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 18:08:24,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 18:08:24,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 18:08:24,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 18:08:24,072 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 18:08:24,072 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 18:08:24,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 18:08:24,392 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 18:08:24,397 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 18:08:24,399 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 18:08:24,399 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 18:08:24,400 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condaf.c [2020-10-14 18:08:24,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a84c8314/cfc1038ff4f344f9b31c3fefab2a1e33/FLAG432554cbe [2020-10-14 18:08:24,898 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 18:08:24,898 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condaf.c [2020-10-14 18:08:24,905 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a84c8314/cfc1038ff4f344f9b31c3fefab2a1e33/FLAG432554cbe [2020-10-14 18:08:25,265 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a84c8314/cfc1038ff4f344f9b31c3fefab2a1e33 [2020-10-14 18:08:25,273 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 18:08:25,274 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 18:08:25,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 18:08:25,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 18:08:25,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 18:08:25,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:08:25" (1/1) ... [2020-10-14 18:08:25,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@479ee9a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:08:25, skipping insertion in model container [2020-10-14 18:08:25,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:08:25" (1/1) ... [2020-10-14 18:08:25,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 18:08:25,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 18:08:25,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:08:25,518 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 18:08:25,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:08:25,587 INFO L208 MainTranslator]: Completed translation [2020-10-14 18:08:25,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:08:25 WrapperNode [2020-10-14 18:08:25,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 18:08:25,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 18:08:25,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 18:08:25,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 18:08:25,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:08:25" (1/1) ... [2020-10-14 18:08:25,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:08:25" (1/1) ... [2020-10-14 18:08:25,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:08:25" (1/1) ... [2020-10-14 18:08:25,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:08:25" (1/1) ... [2020-10-14 18:08:25,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:08:25" (1/1) ... [2020-10-14 18:08:25,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:08:25" (1/1) ... [2020-10-14 18:08:25,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:08:25" (1/1) ... [2020-10-14 18:08:25,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 18:08:25,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 18:08:25,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 18:08:25,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 18:08:25,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:08:25" (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 18:08:25,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 18:08:25,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 18:08:25,878 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 18:08:25,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 18:08:25,878 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 18:08:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 18:08:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 18:08:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 18:08:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 18:08:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 18:08:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 18:08:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 18:08:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 18:08:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 18:08:25,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 18:08:25,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 18:08:25,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 18:08:25,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 18:08:25,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 18:08:26,159 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 18:08:26,160 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 18:08:26,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:08:26 BoogieIcfgContainer [2020-10-14 18:08:26,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 18:08:26,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 18:08:26,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 18:08:26,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 18:08:26,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:08:25" (1/3) ... [2020-10-14 18:08:26,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@818cbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:08:26, skipping insertion in model container [2020-10-14 18:08:26,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:08:25" (2/3) ... [2020-10-14 18:08:26,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@818cbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:08:26, skipping insertion in model container [2020-10-14 18:08:26,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:08:26" (3/3) ... [2020-10-14 18:08:26,174 INFO L109 eAbstractionObserver]: Analyzing ICFG condaf.c [2020-10-14 18:08:26,187 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 18:08:26,199 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 18:08:26,218 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 18:08:26,247 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 18:08:26,248 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 18:08:26,248 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 18:08:26,248 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 18:08:26,248 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 18:08:26,249 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 18:08:26,249 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 18:08:26,249 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 18:08:26,273 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-14 18:08:26,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 18:08:26,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:26,282 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 18:08:26,283 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:26,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:26,290 INFO L82 PathProgramCache]: Analyzing trace with hash -88121349, now seen corresponding path program 1 times [2020-10-14 18:08:26,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:26,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203698047] [2020-10-14 18:08:26,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:26,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:26,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:26,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:26,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:26,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:27,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:27,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 18:08:27,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:08:27,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 917 [2020-10-14 18:08:27,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:27,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:27,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:08:27,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:08:27,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 18:08:27,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 18:08:27,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:08:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:27,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:27,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:27,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:08:27,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:27,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:08:27,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:27,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:27,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:27,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:27,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:27,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:08:27,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:08:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:27,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:27,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:27,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:27,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:27,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:08:27,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 18:08:27,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:27,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:27,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:08:27,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:27,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:08:27,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:27,529 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 18:08:27,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203698047] [2020-10-14 18:08:27,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:08:27,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 18:08:27,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112122184] [2020-10-14 18:08:27,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 18:08:27,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:08:27,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 18:08:27,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:08:27,561 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 5 states. [2020-10-14 18:08:27,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:08:27,814 INFO L93 Difference]: Finished difference Result 67 states and 89 transitions. [2020-10-14 18:08:27,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 18:08:27,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-14 18:08:27,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:08:27,827 INFO L225 Difference]: With dead ends: 67 [2020-10-14 18:08:27,828 INFO L226 Difference]: Without dead ends: 31 [2020-10-14 18:08:27,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 18:08:27,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-14 18:08:27,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-14 18:08:27,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 18:08:27,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-14 18:08:27,884 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23 [2020-10-14 18:08:27,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:08:27,885 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-14 18:08:27,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 18:08:27,888 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-14 18:08:27,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 18:08:27,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:27,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:08:27,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 18:08:27,896 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:27,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:27,898 INFO L82 PathProgramCache]: Analyzing trace with hash 188437731, now seen corresponding path program 1 times [2020-10-14 18:08:27,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:27,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332264997] [2020-10-14 18:08:27,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:27,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:28,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:28,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:28,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:29,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:29,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:29,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:29,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:29,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:31,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:31,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 18:08:31,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 18:08:31,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3115 [2020-10-14 18:08:31,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:31,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:31,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 18:08:31,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 18:08:31,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 18:08:31,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:31,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:08:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:31,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:31,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:31,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:08:31,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:31,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:08:31,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:31,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:31,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:31,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:31,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:31,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:31,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:08:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:08:31,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:08:31,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:08:31,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:08:31,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:08:31,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:08:31,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:08:31,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:08:31,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:08:31,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:08:31,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:08:31,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:08:31,443 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:08:31,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332264997] [2020-10-14 18:08:31,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:08:31,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 18:08:31,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998725822] [2020-10-14 18:08:31,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 18:08:31,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:08:31,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 18:08:31,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:08:31,448 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 14 states. [2020-10-14 18:08:31,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:08:31,945 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2020-10-14 18:08:31,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 18:08:31,945 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 30 [2020-10-14 18:08:31,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:08:31,949 INFO L225 Difference]: With dead ends: 51 [2020-10-14 18:08:31,949 INFO L226 Difference]: Without dead ends: 45 [2020-10-14 18:08:31,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:08:31,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-14 18:08:31,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-10-14 18:08:31,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 18:08:31,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-10-14 18:08:31,961 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 30 [2020-10-14 18:08:31,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:08:31,961 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-10-14 18:08:31,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 18:08:31,961 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-10-14 18:08:31,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 18:08:31,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:08:31,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:08:31,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 18:08:31,963 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:08:31,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:08:31,964 INFO L82 PathProgramCache]: Analyzing trace with hash 446603169, now seen corresponding path program 1 times [2020-10-14 18:08:31,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:08:31,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684684060] [2020-10-14 18:08:31,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:08:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 18:08:31,981 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 18:08:31,981 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 18:08:31,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 18:08:32,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 06:08:32 BoogieIcfgContainer [2020-10-14 18:08:32,004 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 18:08:32,007 INFO L168 Benchmark]: Toolchain (without parser) took 6731.83 ms. Allocated memory was 146.8 MB in the beginning and 281.5 MB in the end (delta: 134.7 MB). Free memory was 103.3 MB in the beginning and 230.3 MB in the end (delta: -127.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 7.1 GB. [2020-10-14 18:08:32,008 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 18:08:32,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.38 ms. Allocated memory is still 146.8 MB. Free memory was 102.8 MB in the beginning and 92.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-10-14 18:08:32,010 INFO L168 Benchmark]: Boogie Preprocessor took 216.57 ms. Allocated memory was 146.8 MB in the beginning and 208.1 MB in the end (delta: 61.3 MB). Free memory was 92.5 MB in the beginning and 185.1 MB in the end (delta: -92.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-10-14 18:08:32,011 INFO L168 Benchmark]: RCFGBuilder took 350.40 ms. Allocated memory is still 208.1 MB. Free memory was 185.1 MB in the beginning and 167.8 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2020-10-14 18:08:32,012 INFO L168 Benchmark]: TraceAbstraction took 5838.58 ms. Allocated memory was 208.1 MB in the beginning and 281.5 MB in the end (delta: 73.4 MB). Free memory was 166.8 MB in the beginning and 230.3 MB in the end (delta: -63.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-10-14 18:08:32,016 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 321.38 ms. Allocated memory is still 146.8 MB. Free memory was 102.8 MB in the beginning and 92.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 216.57 ms. Allocated memory was 146.8 MB in the beginning and 208.1 MB in the end (delta: 61.3 MB). Free memory was 92.5 MB in the beginning and 185.1 MB in the end (delta: -92.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 350.40 ms. Allocated memory is still 208.1 MB. Free memory was 185.1 MB in the beginning and 167.8 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5838.58 ms. Allocated memory was 208.1 MB in the beginning and 281.5 MB in the end (delta: 73.4 MB). Free memory was 166.8 MB in the beginning and 230.3 MB in the end (delta: -63.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] int sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i