/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/loops/trex03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 00:12:17,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 00:12:17,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 00:12:17,087 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 00:12:17,087 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 00:12:17,088 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 00:12:17,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 00:12:17,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 00:12:17,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 00:12:17,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 00:12:17,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 00:12:17,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 00:12:17,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 00:12:17,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 00:12:17,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 00:12:17,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 00:12:17,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 00:12:17,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 00:12:17,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 00:12:17,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 00:12:17,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 00:12:17,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 00:12:17,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 00:12:17,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 00:12:17,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 00:12:17,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 00:12:17,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 00:12:17,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 00:12:17,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 00:12:17,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 00:12:17,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 00:12:17,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 00:12:17,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 00:12:17,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 00:12:17,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 00:12:17,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 00:12:17,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 00:12:17,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 00:12:17,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 00:12:17,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 00:12:17,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 00:12:17,121 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 [2020-10-15 00:12:17,164 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 00:12:17,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 00:12:17,169 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 00:12:17,169 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 00:12:17,169 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 00:12:17,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 00:12:17,170 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 00:12:17,170 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 00:12:17,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 00:12:17,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 00:12:17,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 00:12:17,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 00:12:17,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 00:12:17,173 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 00:12:17,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 00:12:17,173 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 00:12:17,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 00:12:17,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 00:12:17,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 00:12:17,175 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 00:12:17,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 00:12:17,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 00:12:17,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 00:12:17,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 00:12:17,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 00:12:17,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 00:12:17,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 00:12:17,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 00:12:17,177 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 00:12:17,177 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; [2020-10-15 00:12:17,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 00:12:17,532 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 00:12:17,537 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 00:12:17,540 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 00:12:17,540 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 00:12:17,541 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex03-1.c [2020-10-15 00:12:17,598 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cbfb06608/4503f176209b470a96dcddfc0cbce33d/FLAGaf434bfa5 [2020-10-15 00:12:18,078 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 00:12:18,079 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/trex03-1.c [2020-10-15 00:12:18,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cbfb06608/4503f176209b470a96dcddfc0cbce33d/FLAGaf434bfa5 [2020-10-15 00:12:18,495 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cbfb06608/4503f176209b470a96dcddfc0cbce33d [2020-10-15 00:12:18,504 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 00:12:18,505 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 00:12:18,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 00:12:18,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 00:12:18,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 00:12:18,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:12:18" (1/1) ... [2020-10-15 00:12:18,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eb51d52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:12:18, skipping insertion in model container [2020-10-15 00:12:18,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:12:18" (1/1) ... [2020-10-15 00:12:18,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 00:12:18,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 00:12:18,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:12:18,717 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 00:12:18,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:12:18,744 INFO L208 MainTranslator]: Completed translation [2020-10-15 00:12:18,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:12:18 WrapperNode [2020-10-15 00:12:18,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 00:12:18,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 00:12:18,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 00:12:18,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 00:12:18,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:12:18" (1/1) ... [2020-10-15 00:12:18,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:12:18" (1/1) ... [2020-10-15 00:12:18,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:12:18" (1/1) ... [2020-10-15 00:12:18,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:12:18" (1/1) ... [2020-10-15 00:12:18,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:12:18" (1/1) ... [2020-10-15 00:12:18,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:12:18" (1/1) ... [2020-10-15 00:12:18,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:12:18" (1/1) ... [2020-10-15 00:12:18,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 00:12:18,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 00:12:18,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 00:12:18,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 00:12:18,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:12:18" (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 [2020-10-15 00:12:18,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 00:12:18,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 00:12:18,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-15 00:12:18,929 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 00:12:18,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 00:12:18,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-15 00:12:18,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-15 00:12:18,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 00:12:18,930 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 00:12:18,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 00:12:18,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 00:12:19,130 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 00:12:19,131 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-15 00:12:19,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:12:19 BoogieIcfgContainer [2020-10-15 00:12:19,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 00:12:19,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 00:12:19,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 00:12:19,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 00:12:19,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:12:18" (1/3) ... [2020-10-15 00:12:19,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73dc3fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:12:19, skipping insertion in model container [2020-10-15 00:12:19,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:12:18" (2/3) ... [2020-10-15 00:12:19,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73dc3fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:12:19, skipping insertion in model container [2020-10-15 00:12:19,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:12:19" (3/3) ... [2020-10-15 00:12:19,143 INFO L109 eAbstractionObserver]: Analyzing ICFG trex03-1.c [2020-10-15 00:12:19,154 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 00:12:19,161 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 00:12:19,175 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 00:12:19,200 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 00:12:19,201 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 00:12:19,201 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 00:12:19,201 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 00:12:19,201 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 00:12:19,202 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 00:12:19,202 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 00:12:19,202 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 00:12:19,221 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-10-15 00:12:19,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 00:12:19,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:12:19,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:12:19,229 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:12:19,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:12:19,234 INFO L82 PathProgramCache]: Analyzing trace with hash -859010367, now seen corresponding path program 1 times [2020-10-15 00:12:19,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:12:19,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350827778] [2020-10-15 00:12:19,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:12:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:19,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:19,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:19,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:12:19,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:19,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-15 00:12:19,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:19,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:19,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:12:19,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:12:19,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:12:19,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 00:12:19,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:12:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:19,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:19,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:19,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 00:12:19,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:19,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 00:12:19,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:19,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:19,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:12:19,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:19,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:12:19,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:12:19,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:12:19,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350827778] [2020-10-15 00:12:19,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:12:19,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 00:12:19,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569427862] [2020-10-15 00:12:19,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-15 00:12:19,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:12:19,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-15 00:12:19,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-15 00:12:19,470 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-10-15 00:12:19,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:12:19,490 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-10-15 00:12:19,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-15 00:12:19,491 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-15 00:12:19,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:12:19,497 INFO L225 Difference]: With dead ends: 33 [2020-10-15 00:12:19,498 INFO L226 Difference]: Without dead ends: 14 [2020-10-15 00:12:19,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-15 00:12:19,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-15 00:12:19,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-15 00:12:19,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-15 00:12:19,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-10-15 00:12:19,534 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2020-10-15 00:12:19,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:12:19,534 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-10-15 00:12:19,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-15 00:12:19,535 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-10-15 00:12:19,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 00:12:19,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:12:19,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:12:19,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 00:12:19,537 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:12:19,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:12:19,538 INFO L82 PathProgramCache]: Analyzing trace with hash -873786703, now seen corresponding path program 1 times [2020-10-15 00:12:19,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:12:19,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285048416] [2020-10-15 00:12:19,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:12:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 00:12:19,583 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-15 00:12:19,583 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 00:12:19,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 00:12:19,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 12:12:19 BoogieIcfgContainer [2020-10-15 00:12:19,600 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 00:12:19,603 INFO L168 Benchmark]: Toolchain (without parser) took 1097.14 ms. Allocated memory was 145.2 MB in the beginning and 200.8 MB in the end (delta: 55.6 MB). Free memory was 101.3 MB in the beginning and 139.4 MB in the end (delta: -38.2 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. [2020-10-15 00:12:19,604 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 145.2 MB. Free memory was 119.8 MB in the beginning and 119.3 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-15 00:12:19,605 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.47 ms. Allocated memory is still 145.2 MB. Free memory was 100.9 MB in the beginning and 91.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-10-15 00:12:19,607 INFO L168 Benchmark]: Boogie Preprocessor took 121.84 ms. Allocated memory was 145.2 MB in the beginning and 200.8 MB in the end (delta: 55.6 MB). Free memory was 91.3 MB in the beginning and 179.1 MB in the end (delta: -87.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-10-15 00:12:19,608 INFO L168 Benchmark]: RCFGBuilder took 267.93 ms. Allocated memory is still 200.8 MB. Free memory was 179.1 MB in the beginning and 166.3 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-10-15 00:12:19,609 INFO L168 Benchmark]: TraceAbstraction took 464.19 ms. Allocated memory is still 200.8 MB. Free memory was 165.3 MB in the beginning and 139.4 MB in the end (delta: 25.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-10-15 00:12:19,613 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 145.2 MB. Free memory was 119.8 MB in the beginning and 119.3 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 238.47 ms. Allocated memory is still 145.2 MB. Free memory was 100.9 MB in the beginning and 91.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.84 ms. Allocated memory was 145.2 MB in the beginning and 200.8 MB in the end (delta: 55.6 MB). Free memory was 91.3 MB in the beginning and 179.1 MB in the end (delta: -87.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 267.93 ms. Allocated memory is still 200.8 MB. Free memory was 179.1 MB in the beginning and 166.3 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 464.19 ms. Allocated memory is still 200.8 MB. Free memory was 165.3 MB in the beginning and 139.4 MB in the end (delta: 25.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L15] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L15] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L16] unsigned int d1=1, d2=1, d3=1; [L17] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L17] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L19] COND FALSE !(x1>0 && x2>0 && x3>0) [L28] CALL __VERIFIER_assert(x1==0 && x2==0 && x3==0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...