/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/geo3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:37:21,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:37:21,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:37:21,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:37:21,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:37:21,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:37:21,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:37:21,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:37:21,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:37:21,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:37:21,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:37:21,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:37:21,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:37:21,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:37:21,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:37:21,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:37:21,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:37:21,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:37:21,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:37:21,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:37:21,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:37:21,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:37:21,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:37:21,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:37:21,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:37:21,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:37:21,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:37:21,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:37:21,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:37:21,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:37:21,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:37:21,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:37:21,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:37:21,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:37:21,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:37:21,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:37:21,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:37:21,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:37:21,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:37:21,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:37:21,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:37:21,191 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 [2020-09-21 12:37:21,218 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:37:21,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:37:21,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:37:21,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:37:21,221 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:37:21,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:37:21,221 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:37:21,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:37:21,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:37:21,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:37:21,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:37:21,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:37:21,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:37:21,222 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:37:21,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:37:21,223 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:37:21,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:37:21,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:37:21,224 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:37:21,224 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:37:21,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:37:21,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:37:21,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:37:21,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:37:21,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:37:21,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:37:21,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:37:21,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:37:21,226 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:37:21,226 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.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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:37:21,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:37:21,705 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:37:21,708 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:37:21,710 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:37:21,710 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:37:21,712 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo3.c [2020-09-21 12:37:21,797 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4276a04a3/f165d9eebf2a4edf85fe02caa86398dc/FLAG90c5fa611 [2020-09-21 12:37:22,341 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:37:22,342 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/nla-digbench/geo3.c [2020-09-21 12:37:22,351 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4276a04a3/f165d9eebf2a4edf85fe02caa86398dc/FLAG90c5fa611 [2020-09-21 12:37:22,708 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4276a04a3/f165d9eebf2a4edf85fe02caa86398dc [2020-09-21 12:37:22,724 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:37:22,730 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:37:22,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:37:22,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:37:22,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:37:22,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:37:22" (1/1) ... [2020-09-21 12:37:22,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25d7518c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:22, skipping insertion in model container [2020-09-21 12:37:22,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:37:22" (1/1) ... [2020-09-21 12:37:22,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:37:22,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:37:22,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:37:22,999 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:37:23,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:37:23,036 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:37:23,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:23 WrapperNode [2020-09-21 12:37:23,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:37:23,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:37:23,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:37:23,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:37:23,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:23" (1/1) ... [2020-09-21 12:37:23,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:23" (1/1) ... [2020-09-21 12:37:23,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:23" (1/1) ... [2020-09-21 12:37:23,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:23" (1/1) ... [2020-09-21 12:37:23,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:23" (1/1) ... [2020-09-21 12:37:23,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:23" (1/1) ... [2020-09-21 12:37:23,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:23" (1/1) ... [2020-09-21 12:37:23,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:37:23,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:37:23,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:37:23,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:37:23,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:23" (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 [2020-09-21 12:37:23,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:37:23,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:37:23,239 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 12:37:23,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 12:37:23,239 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:37:23,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:37:23,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:37:23,240 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 12:37:23,240 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 12:37:23,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 12:37:23,240 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:37:23,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:37:23,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:37:23,479 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:37:23,480 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 12:37:23,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:37:23 BoogieIcfgContainer [2020-09-21 12:37:23,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:37:23,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:37:23,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:37:23,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:37:23,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:37:22" (1/3) ... [2020-09-21 12:37:23,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c360dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:37:23, skipping insertion in model container [2020-09-21 12:37:23,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:37:23" (2/3) ... [2020-09-21 12:37:23,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c360dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:37:23, skipping insertion in model container [2020-09-21 12:37:23,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:37:23" (3/3) ... [2020-09-21 12:37:23,526 INFO L109 eAbstractionObserver]: Analyzing ICFG geo3.c [2020-09-21 12:37:23,552 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:37:23,578 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:37:23,597 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:37:23,627 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:37:23,627 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:37:23,627 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:37:23,627 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:37:23,627 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:37:23,627 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:37:23,628 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:37:23,628 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:37:23,648 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-09-21 12:37:23,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-21 12:37:23,656 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:37:23,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:37:23,658 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:37:23,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:37:23,664 INFO L82 PathProgramCache]: Analyzing trace with hash -64610451, now seen corresponding path program 1 times [2020-09-21 12:37:23,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:37:23,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070063086] [2020-09-21 12:37:23,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:37:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:37:23,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:37:23,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070063086] [2020-09-21 12:37:23,831 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-09-21 12:37:23,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:37:23,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-09-21 12:37:23,832 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-09-21 12:37:23,833 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:37:23,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:37:23,854 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-21 12:37:23,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:37:23 BoogieIcfgContainer [2020-09-21 12:37:23,855 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:37:23,859 INFO L168 Benchmark]: Toolchain (without parser) took 1131.49 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.1 MB in the beginning and 155.9 MB in the end (delta: -52.8 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-21 12:37:23,860 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:37:23,861 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.24 ms. Allocated memory is still 140.5 MB. Free memory was 102.7 MB in the beginning and 93.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-21 12:37:23,862 INFO L168 Benchmark]: Boogie Preprocessor took 112.05 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 93.0 MB in the beginning and 181.5 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:37:23,863 INFO L168 Benchmark]: RCFGBuilder took 337.07 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 169.8 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:37:23,864 INFO L168 Benchmark]: TraceAbstraction took 353.41 ms. Allocated memory is still 203.4 MB. Free memory was 169.1 MB in the beginning and 155.9 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-09-21 12:37:23,869 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 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 303.24 ms. Allocated memory is still 140.5 MB. Free memory was 102.7 MB in the beginning and 93.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.05 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 93.0 MB in the beginning and 181.5 MB in the end (delta: -88.5 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 337.07 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 169.8 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 353.41 ms. Allocated memory is still 203.4 MB. Free memory was 169.1 MB in the beginning and 155.9 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: 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: [L20] int z, a, k; [L21] int x, y, c; [L22] z = __VERIFIER_nondet_int() [L23] a = __VERIFIER_nondet_int() [L24] k = __VERIFIER_nondet_int() [L26] x = a [L27] y = 1 [L28] c = 1 [L30] COND FALSE !(1) [L40] CALL __VERIFIER_assert(z*x - x + a - a*z*y == 0) [L13] COND TRUE !(cond) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...