/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 08:08:26,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 08:08:26,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 08:08:26,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-16 08:08:26,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-16 08:08:26,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-16 08:08:26,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-16 08:08:26,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-16 08:08:26,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-16 08:08:26,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-16 08:08:26,165 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-16 08:08:26,166 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-16 08:08:26,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 08:08:26,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 08:08:26,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 08:08:26,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 08:08:26,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 08:08:26,171 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 08:08:26,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 08:08:26,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 08:08:26,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 08:08:26,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 08:08:26,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 08:08:26,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 08:08:26,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-04-16 08:08:26,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-04-16 08:08:26,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-04-16 08:08:26,182 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-04-16 08:08:26,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-04-16 08:08:26,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-04-16 08:08:26,183 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-16 08:08:26,184 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-16 08:08:26,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-16 08:08:26,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-16 08:08:26,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-16 08:08:26,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-16 08:08:26,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-16 08:08:26,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-16 08:08:26,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 08:08:26,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 08:08:26,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 08:08:26,201 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-04-16 08:08:26,220 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 08:08:26,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 08:08:26,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 08:08:26,222 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 08:08:26,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 08:08:26,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 08:08:26,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 08:08:26,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 08:08:26,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 08:08:26,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 08:08:26,223 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 08:08:26,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 08:08:26,223 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 08:08:26,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 08:08:26,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 08:08:26,224 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 08:08:26,224 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-16 08:08:26,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 08:08:26,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 08:08:26,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 08:08:26,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-04-16 08:08:26,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-16 08:08:26,225 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-04-16 08:08:26,225 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 08:08:26,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 08:08:26,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 08:08:26,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 08:08:26,642 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 08:08:26,643 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 08:08:26,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound5.c [2021-04-16 08:08:26,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ca36c3e6/593c616f269c404390f4062cec2aff6a/FLAG23192c913 [2021-04-16 08:08:27,230 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 08:08:27,231 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound5.c [2021-04-16 08:08:27,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ca36c3e6/593c616f269c404390f4062cec2aff6a/FLAG23192c913 [2021-04-16 08:08:27,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ca36c3e6/593c616f269c404390f4062cec2aff6a [2021-04-16 08:08:27,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 08:08:27,673 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-16 08:08:27,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 08:08:27,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 08:08:27,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 08:08:27,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 08:08:27" (1/1) ... [2021-04-16 08:08:27,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75f786e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:08:27, skipping insertion in model container [2021-04-16 08:08:27,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 08:08:27" (1/1) ... [2021-04-16 08:08:27,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 08:08:27,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 08:08:27,804 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound5.c[525,538] [2021-04-16 08:08:27,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 08:08:27,828 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 08:08:27,843 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound5.c[525,538] [2021-04-16 08:08:27,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 08:08:27,896 INFO L208 MainTranslator]: Completed translation [2021-04-16 08:08:27,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:08:27 WrapperNode [2021-04-16 08:08:27,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 08:08:27,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 08:08:27,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 08:08:27,899 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 08:08:27,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:08:27" (1/1) ... [2021-04-16 08:08:27,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:08:27" (1/1) ... [2021-04-16 08:08:27,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:08:27" (1/1) ... [2021-04-16 08:08:27,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:08:27" (1/1) ... [2021-04-16 08:08:27,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:08:27" (1/1) ... [2021-04-16 08:08:27,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:08:27" (1/1) ... [2021-04-16 08:08:27,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:08:27" (1/1) ... [2021-04-16 08:08:27,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 08:08:27,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 08:08:27,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 08:08:27,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 08:08:27,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:08:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-04-16 08:08:28,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 08:08:28,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 08:08:28,045 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 08:08:28,045 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-04-16 08:08:28,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-04-16 08:08:28,045 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 08:08:28,045 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-16 08:08:28,046 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 08:08:28,046 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 08:08:28,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 08:08:28,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-04-16 08:08:28,047 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-04-16 08:08:28,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 08:08:28,047 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 08:08:28,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 08:08:28,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 08:08:28,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 08:08:28,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 08:08:28,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 08:08:28,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 08:08:28,361 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 08:08:28,361 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-04-16 08:08:28,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 08:08:28 BoogieIcfgContainer [2021-04-16 08:08:28,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 08:08:28,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 08:08:28,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 08:08:28,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 08:08:28,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 08:08:27" (1/3) ... [2021-04-16 08:08:28,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@989d62d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 08:08:28, skipping insertion in model container [2021-04-16 08:08:28,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 08:08:27" (2/3) ... [2021-04-16 08:08:28,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@989d62d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 08:08:28, skipping insertion in model container [2021-04-16 08:08:28,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 08:08:28" (3/3) ... [2021-04-16 08:08:28,387 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll_unwindbound5.c [2021-04-16 08:08:28,392 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-04-16 08:08:28,395 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 08:08:28,442 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 08:08:28,474 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 08:08:28,474 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-16 08:08:28,474 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-04-16 08:08:28,474 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 08:08:28,474 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 08:08:28,474 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 08:08:28,475 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 08:08:28,475 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 08:08:28,490 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-04-16 08:08:28,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-04-16 08:08:28,498 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 08:08:28,499 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 08:08:28,499 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 08:08:28,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 08:08:28,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1665267581, now seen corresponding path program 1 times [2021-04-16 08:08:28,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 08:08:28,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212726648] [2021-04-16 08:08:28,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 08:08:28,580 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 08:08:28,645 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-04-16 08:08:28,646 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-04-16 08:08:28,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 08:08:28,673 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-04-16 08:08:28,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 08:08:28 BoogieIcfgContainer [2021-04-16 08:08:28,674 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-16 08:08:28,676 INFO L168 Benchmark]: Toolchain (without parser) took 1002.23 ms. Allocated memory is still 208.7 MB. Free memory was 174.6 MB in the beginning and 165.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.7 MB. Max. memory is 8.0 GB. [2021-04-16 08:08:28,677 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 208.7 MB. Free memory is still 191.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 08:08:28,677 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.06 ms. Allocated memory is still 208.7 MB. Free memory was 174.4 MB in the beginning and 192.8 MB in the end (delta: -18.4 MB). Peak memory consumption was 13.9 MB. Max. memory is 8.0 GB. [2021-04-16 08:08:28,678 INFO L168 Benchmark]: Boogie Preprocessor took 61.26 ms. Allocated memory is still 208.7 MB. Free memory was 192.8 MB in the beginning and 191.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-04-16 08:08:28,679 INFO L168 Benchmark]: RCFGBuilder took 401.92 ms. Allocated memory is still 208.7 MB. Free memory was 191.0 MB in the beginning and 176.8 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-04-16 08:08:28,679 INFO L168 Benchmark]: TraceAbstraction took 310.10 ms. Allocated memory is still 208.7 MB. Free memory was 176.3 MB in the beginning and 165.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-04-16 08:08:28,690 INFO L339 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 208.7 MB. Free memory is still 191.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 223.06 ms. Allocated memory is still 208.7 MB. Free memory was 174.4 MB in the beginning and 192.8 MB in the end (delta: -18.4 MB). Peak memory consumption was 13.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 61.26 ms. Allocated memory is still 208.7 MB. Free memory was 192.8 MB in the beginning and 191.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 401.92 ms. Allocated memory is still 208.7 MB. Free memory was 191.0 MB in the beginning and 176.8 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 310.10 ms. Allocated memory is still 208.7 MB. Free memory was 176.3 MB in the beginning and 165.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L21] int counter = 0; [L23] int z, a, k; [L24] long long x, y, c, az; [L25] z = __VERIFIER_nondet_int() [L26] a = __VERIFIER_nondet_int() [L27] k = __VERIFIER_nondet_int() [L29] x = a [L30] y = 1 [L31] c = 1 [L32] az = (long long) a * z [L44] CALL __VERIFIER_assert(z*x - x + a - az*y == 0) [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 178.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 12.7ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...