/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-programs/partial_mod_count_limited_base.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 18:25:36,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 18:25:36,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 18:25:36,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 18:25:36,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 18:25:36,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 18:25:36,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 18:25:36,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 18:25:36,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 18:25:36,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 18:25:36,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 18:25:36,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 18:25:36,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 18:25:36,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 18:25:36,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 18:25:36,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 18:25:36,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 18:25:36,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 18:25:36,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 18:25:36,523 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 18:25:36,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 18:25:36,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 18:25:36,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 18:25:36,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 18:25:36,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 18:25:36,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 18:25:36,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 18:25:36,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 18:25:36,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 18:25:36,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 18:25:36,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 18:25:36,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 18:25:36,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 18:25:36,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 18:25:36,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 18:25:36,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 18:25:36,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 18:25:36,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 18:25:36,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 18:25:36,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 18:25:36,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 18:25:36,545 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 18:25:36,572 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 18:25:36,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 18:25:36,574 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 18:25:36,575 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 18:25:36,575 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 18:25:36,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 18:25:36,575 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 18:25:36,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 18:25:36,576 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 18:25:36,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 18:25:36,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 18:25:36,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 18:25:36,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 18:25:36,577 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 18:25:36,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 18:25:36,577 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 18:25:36,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 18:25:36,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 18:25:36,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 18:25:36,578 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 18:25:36,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 18:25:36,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:25:36,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 18:25:36,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 18:25:36,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 18:25:36,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 18:25:36,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 18:25:36,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 18:25:36,580 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 18:25:36,580 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 18:25:36,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 18:25:36,918 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 18:25:36,923 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 18:25:36,927 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 18:25:36,927 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 18:25:36,928 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-programs/partial_mod_count_limited_base.c [2020-10-14 18:25:37,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9258ce1f/56775cf9e2b042309ad179fdcdbf64f8/FLAGaae3490e1 [2020-10-14 18:25:37,544 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 18:25:37,545 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-programs/partial_mod_count_limited_base.c [2020-10-14 18:25:37,553 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9258ce1f/56775cf9e2b042309ad179fdcdbf64f8/FLAGaae3490e1 [2020-10-14 18:25:37,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9258ce1f/56775cf9e2b042309ad179fdcdbf64f8 [2020-10-14 18:25:37,894 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 18:25:37,899 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 18:25:37,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 18:25:37,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 18:25:37,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 18:25:37,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:25:37" (1/1) ... [2020-10-14 18:25:37,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b309059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:25:37, skipping insertion in model container [2020-10-14 18:25:37,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:25:37" (1/1) ... [2020-10-14 18:25:37,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 18:25:37,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 18:25:38,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:25:38,143 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 18:25:38,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:25:38,199 INFO L208 MainTranslator]: Completed translation [2020-10-14 18:25:38,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:25:38 WrapperNode [2020-10-14 18:25:38,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 18:25:38,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 18:25:38,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 18:25:38,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 18:25:38,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:25:38" (1/1) ... [2020-10-14 18:25:38,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:25:38" (1/1) ... [2020-10-14 18:25:38,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:25:38" (1/1) ... [2020-10-14 18:25:38,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:25:38" (1/1) ... [2020-10-14 18:25:38,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:25:38" (1/1) ... [2020-10-14 18:25:38,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:25:38" (1/1) ... [2020-10-14 18:25:38,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:25:38" (1/1) ... [2020-10-14 18:25:38,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 18:25:38,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 18:25:38,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 18:25:38,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 18:25:38,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:25:38" (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 18:25:38,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 18:25:38,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 18:25:38,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 18:25:38,425 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 18:25:38,425 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 18:25:38,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 18:25:38,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 18:25:38,425 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 18:25:38,426 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 18:25:38,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 18:25:38,426 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 18:25:38,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 18:25:38,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 18:25:38,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 18:25:38,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 18:25:38,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 18:25:38,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 18:25:38,759 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 18:25:38,760 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 18:25:38,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:25:38 BoogieIcfgContainer [2020-10-14 18:25:38,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 18:25:38,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 18:25:38,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 18:25:38,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 18:25:38,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:25:37" (1/3) ... [2020-10-14 18:25:38,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f0f9a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:25:38, skipping insertion in model container [2020-10-14 18:25:38,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:25:38" (2/3) ... [2020-10-14 18:25:38,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f0f9a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:25:38, skipping insertion in model container [2020-10-14 18:25:38,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:25:38" (3/3) ... [2020-10-14 18:25:38,778 INFO L109 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_base.c [2020-10-14 18:25:38,792 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 18:25:38,809 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 18:25:38,828 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 18:25:38,853 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 18:25:38,853 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 18:25:38,854 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 18:25:38,854 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 18:25:38,854 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 18:25:38,855 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 18:25:38,855 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 18:25:38,855 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 18:25:38,877 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-14 18:25:38,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 18:25:38,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:38,885 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] [2020-10-14 18:25:38,886 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:38,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:38,892 INFO L82 PathProgramCache]: Analyzing trace with hash -113598078, now seen corresponding path program 1 times [2020-10-14 18:25:38,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:38,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369254704] [2020-10-14 18:25:38,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:39,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:39,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:39,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:39,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:39,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:39,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 18:25:39,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 18:25:39,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 931 [2020-10-14 18:25:39,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:39,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:39,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:25:39,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 18:25:39,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 18:25:39,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 18:25:40,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:25:40,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:40,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:40,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:40,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:25:40,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:25:40,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 18:25:40,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:40,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:40,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:40,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:40,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 18:25:40,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:40,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 18:25:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:25:40,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:40,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:25:40,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:25:40,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:25:40,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:25:40,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 18:25:40,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:25:40,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:25:40,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:25:40,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:25:40,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:25:40,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:25:40,105 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 18:25:40,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369254704] [2020-10-14 18:25:40,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:25:40,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 18:25:40,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605882994] [2020-10-14 18:25:40,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 18:25:40,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:25:40,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 18:25:40,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:25:40,139 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-10-14 18:25:40,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:25:40,452 INFO L93 Difference]: Finished difference Result 66 states and 91 transitions. [2020-10-14 18:25:40,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 18:25:40,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-14 18:25:40,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:25:40,468 INFO L225 Difference]: With dead ends: 66 [2020-10-14 18:25:40,469 INFO L226 Difference]: Without dead ends: 37 [2020-10-14 18:25:40,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 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 18:25:40,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-14 18:25:40,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2020-10-14 18:25:40,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 18:25:40,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-14 18:25:40,543 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 20 [2020-10-14 18:25:40,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:25:40,544 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-14 18:25:40,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 18:25:40,545 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-14 18:25:40,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 18:25:40,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:25:40,547 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] [2020-10-14 18:25:40,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 18:25:40,549 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:25:40,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:25:40,554 INFO L82 PathProgramCache]: Analyzing trace with hash -997822257, now seen corresponding path program 1 times [2020-10-14 18:25:40,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:25:40,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954500007] [2020-10-14 18:25:40,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:25:40,584 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-14 18:25:40,585 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-14 18:25:40,585 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 18:25:40,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 18:25:40,619 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-14 18:25:40,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 06:25:40 BoogieIcfgContainer [2020-10-14 18:25:40,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 18:25:40,625 INFO L168 Benchmark]: Toolchain (without parser) took 2725.00 ms. Allocated memory was 148.4 MB in the beginning and 232.8 MB in the end (delta: 84.4 MB). Free memory was 104.8 MB in the beginning and 185.5 MB in the end (delta: -80.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. [2020-10-14 18:25:40,629 INFO L168 Benchmark]: CDTParser took 0.87 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.5 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 18:25:40,631 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.41 ms. Allocated memory is still 148.4 MB. Free memory was 104.8 MB in the beginning and 94.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-10-14 18:25:40,632 INFO L168 Benchmark]: Boogie Preprocessor took 150.30 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 94.1 MB in the beginning and 181.9 MB in the end (delta: -87.8 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-10-14 18:25:40,634 INFO L168 Benchmark]: RCFGBuilder took 415.59 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 165.4 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2020-10-14 18:25:40,637 INFO L168 Benchmark]: TraceAbstraction took 1852.00 ms. Allocated memory was 204.5 MB in the beginning and 232.8 MB in the end (delta: 28.3 MB). Free memory was 165.4 MB in the beginning and 185.5 MB in the end (delta: -20.1 MB). Peak memory consumption was 8.2 MB. Max. memory is 7.1 GB. [2020-10-14 18:25:40,654 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.87 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.5 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 298.41 ms. Allocated memory is still 148.4 MB. Free memory was 104.8 MB in the beginning and 94.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 150.30 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 94.1 MB in the beginning and 181.9 MB in the end (delta: -87.8 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 415.59 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 165.4 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1852.00 ms. Allocated memory was 204.5 MB in the beginning and 232.8 MB in the end (delta: 28.3 MB). Free memory was 165.4 MB in the beginning and 185.5 MB in the end (delta: -20.1 MB). Peak memory consumption was 8.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 2]: 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: [L8] int N = 1000000; [L10] int i,j=0,k=0,a[N]; [L11] unsigned int R=__VERIFIER_nondet_int(); [L12] CALL assume_abort_if_not(R>0) [L5] COND FALSE !(!cond) [L12] RET assume_abort_if_not(R>0) [L13] i=0 [L13] COND TRUE iN/2 && k<1 [L16] a[i]=i%R [L17] EXPR a[i] [L17] COND TRUE a[i]==0 [L17] k++ [L13] i++ [L13] COND FALSE !(i