/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/loop-new/gauss_sum.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 07:23:35,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 07:23:35,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 07:23:35,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-01 07:23:35,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 07:23:35,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 07:23:35,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 07:23:35,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 07:23:35,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 07:23:35,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 07:23:35,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 07:23:35,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 07:23:35,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 07:23:35,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 07:23:35,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 07:23:35,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 07:23:35,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-01 07:23:35,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 07:23:35,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 07:23:35,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 07:23:35,476 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-01 07:23:35,493 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 07:23:35,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 07:23:35,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 07:23:35,497 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 07:23:35,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 07:23:35,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 07:23:35,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 07:23:35,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 07:23:35,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 07:23:35,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 07:23:35,499 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 07:23:35,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 07:23:35,500 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 07:23:35,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 07:23:35,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 07:23:35,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 07:23:35,500 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 07:23:35,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 07:23:35,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 07:23:35,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 07:23:35,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 07:23:35,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 07:23:35,502 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 07:23:35,502 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 07:23:35,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 07:23:35,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 07:23:35,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 07:23:35,893 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 07:23:35,894 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 07:23:35,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/gauss_sum.i [2021-05-01 07:23:35,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/490db9340/89ddd74473a34936a1608f8ad7185867/FLAGfa1491738 [2021-05-01 07:23:36,384 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 07:23:36,384 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum.i [2021-05-01 07:23:36,390 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/490db9340/89ddd74473a34936a1608f8ad7185867/FLAGfa1491738 [2021-05-01 07:23:36,805 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/490db9340/89ddd74473a34936a1608f8ad7185867 [2021-05-01 07:23:36,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 07:23:36,809 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 07:23:36,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 07:23:36,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 07:23:36,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 07:23:36,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:23:36" (1/1) ... [2021-05-01 07:23:36,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5805d283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:23:36, skipping insertion in model container [2021-05-01 07:23:36,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:23:36" (1/1) ... [2021-05-01 07:23:36,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 07:23:36,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 07:23:36,979 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum.i[891,904] [2021-05-01 07:23:36,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 07:23:36,994 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 07:23:37,006 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-new/gauss_sum.i[891,904] [2021-05-01 07:23:37,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 07:23:37,061 INFO L208 MainTranslator]: Completed translation [2021-05-01 07:23:37,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:23:37 WrapperNode [2021-05-01 07:23:37,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 07:23:37,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 07:23:37,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 07:23:37,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 07:23:37,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:23:37" (1/1) ... [2021-05-01 07:23:37,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:23:37" (1/1) ... [2021-05-01 07:23:37,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:23:37" (1/1) ... [2021-05-01 07:23:37,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:23:37" (1/1) ... [2021-05-01 07:23:37,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:23:37" (1/1) ... [2021-05-01 07:23:37,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:23:37" (1/1) ... [2021-05-01 07:23:37,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:23:37" (1/1) ... [2021-05-01 07:23:37,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 07:23:37,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 07:23:37,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 07:23:37,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 07:23:37,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:23:37" (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 [2021-05-01 07:23:37,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 07:23:37,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 07:23:37,187 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 07:23:37,187 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-01 07:23:37,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 07:23:37,187 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 07:23:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 07:23:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 07:23:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-01 07:23:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-01 07:23:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 07:23:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 07:23:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-01 07:23:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 07:23:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-01 07:23:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 07:23:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 07:23:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 07:23:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 07:23:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 07:23:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 07:23:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 07:23:37,392 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 07:23:37,393 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-01 07:23:37,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:23:37 BoogieIcfgContainer [2021-05-01 07:23:37,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 07:23:37,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 07:23:37,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 07:23:37,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 07:23:37,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 07:23:36" (1/3) ... [2021-05-01 07:23:37,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e386810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:23:37, skipping insertion in model container [2021-05-01 07:23:37,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:23:37" (2/3) ... [2021-05-01 07:23:37,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e386810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:23:37, skipping insertion in model container [2021-05-01 07:23:37,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:23:37" (3/3) ... [2021-05-01 07:23:37,401 INFO L111 eAbstractionObserver]: Analyzing ICFG gauss_sum.i [2021-05-01 07:23:37,407 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 07:23:37,410 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 07:23:37,425 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 07:23:37,443 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 07:23:37,443 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 07:23:37,444 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 07:23:37,444 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 07:23:37,444 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 07:23:37,444 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 07:23:37,444 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 07:23:37,444 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 07:23:37,466 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:23:37,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-01 07:23:37,473 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:23:37,474 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:23:37,474 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:23:37,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:23:37,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1676006891, now seen corresponding path program 1 times [2021-05-01 07:23:37,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:23:37,503 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005628157] [2021-05-01 07:23:37,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:23:37,576 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 07:23:37,652 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-01 07:23:37,652 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-05-01 07:23:37,657 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 07:23:37,679 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-01 07:23:37,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 07:23:37 BoogieIcfgContainer [2021-05-01 07:23:37,680 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 07:23:37,681 INFO L168 Benchmark]: Toolchain (without parser) took 871.19 ms. Allocated memory is still 202.4 MB. Free memory was 167.7 MB in the beginning and 160.5 MB in the end (delta: 7.3 MB). Peak memory consumption was 7.1 MB. Max. memory is 8.0 GB. [2021-05-01 07:23:37,682 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 202.4 MB. Free memory is still 184.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 07:23:37,683 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.13 ms. Allocated memory is still 202.4 MB. Free memory was 167.6 MB in the beginning and 187.3 MB in the end (delta: -19.7 MB). Peak memory consumption was 17.6 MB. Max. memory is 8.0 GB. [2021-05-01 07:23:37,683 INFO L168 Benchmark]: Boogie Preprocessor took 62.93 ms. Allocated memory is still 202.4 MB. Free memory was 187.3 MB in the beginning and 185.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-01 07:23:37,684 INFO L168 Benchmark]: RCFGBuilder took 267.47 ms. Allocated memory is still 202.4 MB. Free memory was 185.6 MB in the beginning and 171.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-01 07:23:37,689 INFO L168 Benchmark]: TraceAbstraction took 283.61 ms. Allocated memory is still 202.4 MB. Free memory was 171.2 MB in the beginning and 160.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-05-01 07:23:37,698 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 202.4 MB. Free memory is still 184.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 248.13 ms. Allocated memory is still 202.4 MB. Free memory was 167.6 MB in the beginning and 187.3 MB in the end (delta: -19.7 MB). Peak memory consumption was 17.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 62.93 ms. Allocated memory is still 202.4 MB. Free memory was 187.3 MB in the beginning and 185.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 267.47 ms. Allocated memory is still 202.4 MB. Free memory was 185.6 MB in the beginning and 171.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 283.61 ms. Allocated memory is still 202.4 MB. Free memory was 171.2 MB in the beginning and 160.5 MB in the end (delta: 10.7 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: 19]: 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: [L25] int n, sum, i; [L26] n = __VERIFIER_nondet_int() [L27] COND FALSE !(!(1 <= n && n <= 1000)) [L28] sum = 0 [L29] i = 1 [L29] COND FALSE !(i <= n) [L32] CALL __VERIFIER_assert(2*sum == n*(n+1)) [L18] COND TRUE !(cond) [L19] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 217.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 19.8ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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...