/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/mods.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 18:12:11,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 18:12:11,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 18:12:11,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 18:12:11,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 18:12:11,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 18:12:11,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 18:12:11,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 18:12:11,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 18:12:11,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 18:12:11,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 18:12:11,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 18:12:11,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 18:12:11,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 18:12:11,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 18:12:11,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 18:12:11,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 18:12:11,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 18:12:11,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 18:12:11,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 18:12:11,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 18:12:11,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 18:12:11,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 18:12:11,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 18:12:11,106 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 18:12:11,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 18:12:11,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 18:12:11,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 18:12:11,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 18:12:11,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 18:12:11,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 18:12:11,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 18:12:11,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 18:12:11,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 18:12:11,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 18:12:11,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 18:12:11,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 18:12:11,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 18:12:11,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 18:12:11,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 18:12:11,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 18:12:11,126 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 18:12:11,172 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 18:12:11,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 18:12:11,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 18:12:11,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 18:12:11,176 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 18:12:11,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 18:12:11,177 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 18:12:11,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 18:12:11,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 18:12:11,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 18:12:11,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 18:12:11,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 18:12:11,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 18:12:11,180 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 18:12:11,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 18:12:11,180 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 18:12:11,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 18:12:11,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 18:12:11,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 18:12:11,181 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 18:12:11,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 18:12:11,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:12:11,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 18:12:11,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 18:12:11,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 18:12:11,182 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 18:12:11,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 18:12:11,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 18:12:11,183 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 18:12:11,183 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 18:12:11,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 18:12:11,484 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 18:12:11,487 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 18:12:11,489 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 18:12:11,489 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 18:12:11,490 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/mods.c [2020-10-14 18:12:11,551 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33aa0f399/b82bf6efbd6943b59b154234c671329a/FLAG34db7f75f [2020-10-14 18:12:12,012 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 18:12:12,013 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/mods.c [2020-10-14 18:12:12,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33aa0f399/b82bf6efbd6943b59b154234c671329a/FLAG34db7f75f [2020-10-14 18:12:12,387 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/33aa0f399/b82bf6efbd6943b59b154234c671329a [2020-10-14 18:12:12,397 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 18:12:12,399 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 18:12:12,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 18:12:12,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 18:12:12,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 18:12:12,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:12:12" (1/1) ... [2020-10-14 18:12:12,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@457589d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:12:12, skipping insertion in model container [2020-10-14 18:12:12,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:12:12" (1/1) ... [2020-10-14 18:12:12,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 18:12:12,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 18:12:12,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:12:12,617 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 18:12:12,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:12:12,656 INFO L208 MainTranslator]: Completed translation [2020-10-14 18:12:12,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:12:12 WrapperNode [2020-10-14 18:12:12,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 18:12:12,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 18:12:12,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 18:12:12,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 18:12:12,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:12:12" (1/1) ... [2020-10-14 18:12:12,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:12:12" (1/1) ... [2020-10-14 18:12:12,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:12:12" (1/1) ... [2020-10-14 18:12:12,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:12:12" (1/1) ... [2020-10-14 18:12:12,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:12:12" (1/1) ... [2020-10-14 18:12:12,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:12:12" (1/1) ... [2020-10-14 18:12:12,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:12:12" (1/1) ... [2020-10-14 18:12:12,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 18:12:12,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 18:12:12,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 18:12:12,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 18:12:12,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:12:12" (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 18:12:12,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 18:12:12,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 18:12:12,837 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 18:12:12,837 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 18:12:12,837 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 18:12:12,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 18:12:12,838 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 18:12:12,838 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 18:12:12,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 18:12:12,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 18:12:12,838 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 18:12:12,838 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 18:12:12,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 18:12:12,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 18:12:12,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 18:12:12,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 18:12:12,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 18:12:12,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 18:12:12,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 18:12:13,141 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 18:12:13,141 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-14 18:12:13,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:12:13 BoogieIcfgContainer [2020-10-14 18:12:13,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 18:12:13,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 18:12:13,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 18:12:13,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 18:12:13,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:12:12" (1/3) ... [2020-10-14 18:12:13,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f53a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:12:13, skipping insertion in model container [2020-10-14 18:12:13,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:12:12" (2/3) ... [2020-10-14 18:12:13,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f53a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:12:13, skipping insertion in model container [2020-10-14 18:12:13,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:12:13" (3/3) ... [2020-10-14 18:12:13,157 INFO L109 eAbstractionObserver]: Analyzing ICFG mods.c [2020-10-14 18:12:13,170 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 18:12:13,179 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 18:12:13,196 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 18:12:13,224 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 18:12:13,225 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 18:12:13,225 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 18:12:13,225 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 18:12:13,225 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 18:12:13,225 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 18:12:13,225 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 18:12:13,226 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 18:12:13,245 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-14 18:12:13,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 18:12:13,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:12:13,255 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] [2020-10-14 18:12:13,256 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:12:13,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:12:13,263 INFO L82 PathProgramCache]: Analyzing trace with hash -173101897, now seen corresponding path program 1 times [2020-10-14 18:12:13,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:12:13,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942657468] [2020-10-14 18:12:13,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:12:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:12:13,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:12:13,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:12:13,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:12:13,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:12:13,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:12:13,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:12:13,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:12:14,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:12:14,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:12:14,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 18:12:14,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 18:12:14,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1188 [2020-10-14 18:12:14,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:12:14,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:12:14,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:12:14,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:12:14,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 18:12:14,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 18:12:14,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:12:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:12:14,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:12:14,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:12:14,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:12:14,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:12:14,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:12:14,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:12:14,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:12:14,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:12:14,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:12:14,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:12:14,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:12:14,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-14 18:12:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:12:14,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:12:14,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:12:14,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:12:14,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:12:14,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:12:14,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:12:14,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:12:14,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:12:14,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:12:14,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:12:14,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:12:14,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:12:14,700 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 18:12:14,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942657468] [2020-10-14 18:12:14,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:12:14,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 18:12:14,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753660106] [2020-10-14 18:12:14,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 18:12:14,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:12:14,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 18:12:14,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:12:14,728 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 5 states. [2020-10-14 18:12:14,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:12:14,962 INFO L93 Difference]: Finished difference Result 79 states and 111 transitions. [2020-10-14 18:12:14,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 18:12:14,964 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-14 18:12:14,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:12:14,974 INFO L225 Difference]: With dead ends: 79 [2020-10-14 18:12:14,975 INFO L226 Difference]: Without dead ends: 40 [2020-10-14 18:12:14,980 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 18:12:15,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-14 18:12:15,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-14 18:12:15,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 18:12:15,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-14 18:12:15,034 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 26 [2020-10-14 18:12:15,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:12:15,035 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-14 18:12:15,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 18:12:15,036 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-14 18:12:15,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 18:12:15,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:12:15,037 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:12:15,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 18:12:15,038 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:12:15,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:12:15,039 INFO L82 PathProgramCache]: Analyzing trace with hash -260192085, now seen corresponding path program 1 times [2020-10-14 18:12:15,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:12:15,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66589206] [2020-10-14 18:12:15,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:12:15,061 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-14 18:12:15,062 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-14 18:12:15,062 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 18:12:15,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 18:12:15,090 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-14 18:12:15,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 06:12:15 BoogieIcfgContainer [2020-10-14 18:12:15,090 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 18:12:15,094 INFO L168 Benchmark]: Toolchain (without parser) took 2693.60 ms. Allocated memory was 146.8 MB in the beginning and 235.9 MB in the end (delta: 89.1 MB). Free memory was 103.1 MB in the beginning and 122.8 MB in the end (delta: -19.7 MB). Peak memory consumption was 69.4 MB. Max. memory is 7.1 GB. [2020-10-14 18:12:15,095 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 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 18:12:15,096 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.24 ms. Allocated memory is still 146.8 MB. Free memory was 102.6 MB in the beginning and 92.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-10-14 18:12:15,097 INFO L168 Benchmark]: Boogie Preprocessor took 123.62 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 92.0 MB in the beginning and 181.3 MB in the end (delta: -89.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-10-14 18:12:15,098 INFO L168 Benchmark]: RCFGBuilder took 364.92 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 161.9 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2020-10-14 18:12:15,100 INFO L168 Benchmark]: TraceAbstraction took 1941.87 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 161.9 MB in the beginning and 122.8 MB in the end (delta: 39.2 MB). Peak memory consumption was 71.2 MB. Max. memory is 7.1 GB. [2020-10-14 18:12:15,104 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 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 257.24 ms. Allocated memory is still 146.8 MB. Free memory was 102.6 MB in the beginning and 92.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.62 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 92.0 MB in the beginning and 181.3 MB in the end (delta: -89.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 364.92 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 161.9 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1941.87 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 161.9 MB in the beginning and 122.8 MB in the end (delta: 39.2 MB). Peak memory consumption was 71.2 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] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i