/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/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-invariants/const.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:33:58,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:33:58,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:33:58,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 21:33:58,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:33:58,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:33:58,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:33:58,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:33:58,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:33:58,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:33:58,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:33:58,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:33:58,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:33:58,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:33:58,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:33:58,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:33:58,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:33:58,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:33:58,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:33:58,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:33:58,399 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:33:58,410 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:33:58,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:33:58,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:33:58,412 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:33:58,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:33:58,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:33:58,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:33:58,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:33:58,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:33:58,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:33:58,414 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:33:58,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:33:58,414 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:33:58,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:33:58,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:33:58,415 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:33:58,416 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:33:58,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:33:58,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:33:58,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:33:58,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:33:58,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:33:58,417 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:33:58,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:33:58,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:33:58,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:33:58,786 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:33:58,786 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:33:58,787 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/const.c [2021-02-21 21:33:58,874 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dc23e6a1/d576750d0c484eeba5e4d9885be1c098/FLAG697aec8bf [2021-02-21 21:33:59,475 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:33:59,476 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/const.c [2021-02-21 21:33:59,483 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dc23e6a1/d576750d0c484eeba5e4d9885be1c098/FLAG697aec8bf [2021-02-21 21:33:59,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dc23e6a1/d576750d0c484eeba5e4d9885be1c098 [2021-02-21 21:33:59,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:33:59,882 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:33:59,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:33:59,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:33:59,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:33:59,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:33:59" (1/1) ... [2021-02-21 21:33:59,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68604ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:33:59, skipping insertion in model container [2021-02-21 21:33:59,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:33:59" (1/1) ... [2021-02-21 21:33:59,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:33:59,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:34:00,109 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/const.c[366,379] [2021-02-21 21:34:00,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:34:00,130 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:34:00,143 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/const.c[366,379] [2021-02-21 21:34:00,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:34:00,161 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:34:00,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:34:00 WrapperNode [2021-02-21 21:34:00,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:34:00,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:34:00,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:34:00,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:34:00,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:34:00" (1/1) ... [2021-02-21 21:34:00,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:34:00" (1/1) ... [2021-02-21 21:34:00,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:34:00" (1/1) ... [2021-02-21 21:34:00,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:34:00" (1/1) ... [2021-02-21 21:34:00,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:34:00" (1/1) ... [2021-02-21 21:34:00,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:34:00" (1/1) ... [2021-02-21 21:34:00,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:34:00" (1/1) ... [2021-02-21 21:34:00,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:34:00,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:34:00,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:34:00,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:34:00,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:34:00" (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 [2021-02-21 21:34:00,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:34:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:34:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:34:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:34:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:34:00,296 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:34:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:34:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:34:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:34:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-21 21:34:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:34:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:34:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:34:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:34:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:34:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:34:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:34:00,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:34:00,607 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:34:00,608 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-21 21:34:00,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:34:00 BoogieIcfgContainer [2021-02-21 21:34:00,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:34:00,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:34:00,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:34:00,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:34:00,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:33:59" (1/3) ... [2021-02-21 21:34:00,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e87e268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:34:00, skipping insertion in model container [2021-02-21 21:34:00,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:34:00" (2/3) ... [2021-02-21 21:34:00,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e87e268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:34:00, skipping insertion in model container [2021-02-21 21:34:00,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:34:00" (3/3) ... [2021-02-21 21:34:00,627 INFO L111 eAbstractionObserver]: Analyzing ICFG const.c [2021-02-21 21:34:00,638 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:34:00,643 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:34:00,662 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:34:00,696 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:34:00,696 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:34:00,697 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:34:00,697 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:34:00,697 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:34:00,698 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:34:00,698 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:34:00,698 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:34:00,719 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2021-02-21 21:34:00,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-21 21:34:00,731 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:34:00,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:34:00,733 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:34:00,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:34:00,743 INFO L82 PathProgramCache]: Analyzing trace with hash -924213387, now seen corresponding path program 1 times [2021-02-21 21:34:00,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:34:00,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841475964] [2021-02-21 21:34:00,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:34:00,822 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:34:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:34:01,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:01,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:34:01,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:01,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:34:01,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:01,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 21:34:01,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:01,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:34:01,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:01,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:34:01,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:01,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:34:01,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:34:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:34:01,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:34:01,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:34:01,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:34:01,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841475964] [2021-02-21 21:34:01,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:34:01,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 21:34:01,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648809269] [2021-02-21 21:34:01,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 21:34:01,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:34:01,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 21:34:01,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:34:01,235 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 6 states. [2021-02-21 21:34:01,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:34:01,489 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2021-02-21 21:34:01,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 21:34:01,491 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2021-02-21 21:34:01,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:34:01,497 INFO L225 Difference]: With dead ends: 53 [2021-02-21 21:34:01,497 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 21:34:01,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-21 21:34:01,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 21:34:01,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 21:34:01,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 21:34:01,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 21:34:01,526 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-02-21 21:34:01,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:34:01,526 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 21:34:01,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 21:34:01,527 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 21:34:01,527 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 21:34:01,527 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:34:01,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 21:34:02,003 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-21 21:34:02,003 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-21 21:34:02,003 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-21 21:34:02,003 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-21 21:34:02,004 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-21 21:34:02,004 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:34:02,004 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-21 21:34:02,004 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-21 21:34:02,004 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-21 21:34:02,005 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-21 21:34:02,005 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-21 21:34:02,005 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-21 21:34:02,005 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:34:02,005 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:34:02,005 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:34:02,006 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 21:34:02,006 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-21 21:34:02,006 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 11 22) the Hoare annotation is: (= main_~s~0 (* (div main_~s~0 4294967296) 4294967296)) [2021-02-21 21:34:02,006 INFO L185 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: (= main_~s~0 (* (div main_~s~0 4294967296) 4294967296)) [2021-02-21 21:34:02,006 INFO L185 CegarLoopUtils]: At program point L17-1(line 17) the Hoare annotation is: (= main_~s~0 (* (div main_~s~0 4294967296) 4294967296)) [2021-02-21 21:34:02,006 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: false [2021-02-21 21:34:02,007 INFO L185 CegarLoopUtils]: At program point L17-2(lines 13 20) the Hoare annotation is: (= main_~s~0 (* (div main_~s~0 4294967296) 4294967296)) [2021-02-21 21:34:02,007 INFO L185 CegarLoopUtils]: At program point L15-1(line 15) the Hoare annotation is: false [2021-02-21 21:34:02,007 INFO L185 CegarLoopUtils]: At program point L15-2(line 15) the Hoare annotation is: false [2021-02-21 21:34:02,007 INFO L185 CegarLoopUtils]: At program point mainFINAL(lines 11 22) the Hoare annotation is: (= main_~s~0 (* (div main_~s~0 4294967296) 4294967296)) [2021-02-21 21:34:02,007 INFO L185 CegarLoopUtils]: At program point L13-1(line 13) the Hoare annotation is: (= main_~s~0 (* (div main_~s~0 4294967296) 4294967296)) [2021-02-21 21:34:02,008 INFO L185 CegarLoopUtils]: At program point L13-3(line 13) the Hoare annotation is: (= main_~s~0 (* (div main_~s~0 4294967296) 4294967296)) [2021-02-21 21:34:02,008 INFO L185 CegarLoopUtils]: At program point L13-4(lines 13 20) the Hoare annotation is: (= main_~s~0 (* (div main_~s~0 4294967296) 4294967296)) [2021-02-21 21:34:02,008 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 11 22) the Hoare annotation is: true [2021-02-21 21:34:02,008 INFO L185 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: (= main_~s~0 (* (div main_~s~0 4294967296) 4294967296)) [2021-02-21 21:34:02,008 INFO L185 CegarLoopUtils]: At program point L14(lines 14 16) the Hoare annotation is: (= main_~s~0 (* (div main_~s~0 4294967296) 4294967296)) [2021-02-21 21:34:02,009 INFO L185 CegarLoopUtils]: At program point L14-2(lines 13 20) the Hoare annotation is: (= main_~s~0 (* (div main_~s~0 4294967296) 4294967296)) [2021-02-21 21:34:02,009 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-02-21 21:34:02,009 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-21 21:34:02,009 INFO L185 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:34:02,009 INFO L185 CegarLoopUtils]: At program point L6(lines 6 8) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-21 21:34:02,010 INFO L185 CegarLoopUtils]: At program point L7-1(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:34:02,010 INFO L185 CegarLoopUtils]: At program point L6-2(lines 5 10) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-21 21:34:02,010 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:34:02,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:34:02 BoogieIcfgContainer [2021-02-21 21:34:02,028 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:34:02,031 INFO L168 Benchmark]: Toolchain (without parser) took 2160.66 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 132.7 MB in the beginning and 129.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 65.2 MB. Max. memory is 8.0 GB. [2021-02-21 21:34:02,031 INFO L168 Benchmark]: CDTParser took 0.84 ms. Allocated memory is still 156.2 MB. Free memory is still 130.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:34:02,032 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.82 ms. Allocated memory is still 156.2 MB. Free memory was 131.5 MB in the beginning and 122.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:34:02,033 INFO L168 Benchmark]: Boogie Preprocessor took 33.70 ms. Allocated memory is still 156.2 MB. Free memory was 122.4 MB in the beginning and 120.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:34:02,035 INFO L168 Benchmark]: RCFGBuilder took 412.62 ms. Allocated memory is still 156.2 MB. Free memory was 120.8 MB in the beginning and 107.0 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-21 21:34:02,036 INFO L168 Benchmark]: TraceAbstraction took 1414.64 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 106.5 MB in the beginning and 129.8 MB in the end (delta: -23.2 MB). Peak memory consumption was 39.0 MB. Max. memory is 8.0 GB. [2021-02-21 21:34:02,039 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.84 ms. Allocated memory is still 156.2 MB. Free memory is still 130.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 274.82 ms. Allocated memory is still 156.2 MB. Free memory was 131.5 MB in the beginning and 122.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.70 ms. Allocated memory is still 156.2 MB. Free memory was 122.4 MB in the beginning and 120.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 412.62 ms. Allocated memory is still 156.2 MB. Free memory was 120.8 MB in the beginning and 107.0 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1414.64 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 106.5 MB in the beginning and 129.8 MB in the end (delta: -23.2 MB). Peak memory consumption was 39.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: s == s / 4294967296 * 4294967296 - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: s == s / 4294967296 * 4294967296 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 28 SDslu, 48 SDs, 0 SdLazy, 41 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred 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: 0.0s HoareAnnotationTime, 36 LocationsWithAnnotation, 43 PreInvPairs, 58 NumberOfFragments, 159 HoareAnnotationTreeSize, 43 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 36 FomulaSimplificationsInter, 514 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, 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 proved your program to be correct! Received shutdown request...