/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/loopv1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:24:19,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:24:19,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:24:19,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 02:24:19,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:24:19,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:24:19,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:24:19,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:24:19,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:24:19,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:24:19,383 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:24:19,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:24:19,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:24:19,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:24:19,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:24:19,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:24:19,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 02:24:19,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:24:19,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:24:19,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:24:19,430 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 02:24:19,452 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:24:19,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:24:19,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:24:19,455 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:24:19,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:24:19,456 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:24:19,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:24:19,456 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:24:19,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:24:19,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:24:19,457 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:24:19,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:24:19,457 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:24:19,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:24:19,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:24:19,458 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:24:19,458 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:24:19,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:24:19,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:24:19,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:24:19,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:24:19,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:24:19,460 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:24:19,460 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:24:19,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:24:20,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:24:20,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:24:20,040 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:24:20,043 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:24:20,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/loopv1.c [2021-02-22 02:24:20,142 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1ace4cec/116fe93b170f46808d6714db281f137f/FLAG119913d15 [2021-02-22 02:24:20,802 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:24:20,803 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv1.c [2021-02-22 02:24:20,813 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1ace4cec/116fe93b170f46808d6714db281f137f/FLAG119913d15 [2021-02-22 02:24:21,159 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1ace4cec/116fe93b170f46808d6714db281f137f [2021-02-22 02:24:21,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:24:21,177 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:24:21,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:24:21,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:24:21,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:24:21,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:24:21" (1/1) ... [2021-02-22 02:24:21,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26272dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:21, skipping insertion in model container [2021-02-22 02:24:21,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:24:21" (1/1) ... [2021-02-22 02:24:21,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:24:21,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:24:21,415 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv1.c[456,469] [2021-02-22 02:24:21,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:24:21,448 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:24:21,462 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv1.c[456,469] [2021-02-22 02:24:21,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:24:21,488 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:24:21,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:21 WrapperNode [2021-02-22 02:24:21,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:24:21,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:24:21,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:24:21,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:24:21,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:21" (1/1) ... [2021-02-22 02:24:21,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:21" (1/1) ... [2021-02-22 02:24:21,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:21" (1/1) ... [2021-02-22 02:24:21,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:21" (1/1) ... [2021-02-22 02:24:21,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:21" (1/1) ... [2021-02-22 02:24:21,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:21" (1/1) ... [2021-02-22 02:24:21,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:21" (1/1) ... [2021-02-22 02:24:21,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:24:21,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:24:21,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:24:21,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:24:21,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:21" (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 [2021-02-22 02:24:21,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:24:21,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:24:21,684 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:24:21,684 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-22 02:24:21,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-22 02:24:21,684 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:24:21,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:24:21,685 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:24:21,685 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:24:21,685 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:24:21,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:24:21,685 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-22 02:24:21,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 02:24:21,686 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:24:21,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:24:21,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:24:21,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:24:21,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:24:21,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:24:21,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:24:22,215 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:24:22,216 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-22 02:24:22,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:24:22 BoogieIcfgContainer [2021-02-22 02:24:22,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:24:22,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:24:22,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:24:22,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:24:22,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:24:21" (1/3) ... [2021-02-22 02:24:22,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4292ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:24:22, skipping insertion in model container [2021-02-22 02:24:22,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:21" (2/3) ... [2021-02-22 02:24:22,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4292ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:24:22, skipping insertion in model container [2021-02-22 02:24:22,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:24:22" (3/3) ... [2021-02-22 02:24:22,236 INFO L111 eAbstractionObserver]: Analyzing ICFG loopv1.c [2021-02-22 02:24:22,247 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:24:22,254 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:24:22,285 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:24:22,317 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:24:22,318 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:24:22,318 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:24:22,318 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:24:22,318 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:24:22,318 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:24:22,319 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:24:22,319 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:24:22,341 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2021-02-22 02:24:22,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-22 02:24:22,355 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:24:22,356 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, 1, 1, 1, 1, 1] [2021-02-22 02:24:22,357 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:24:22,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:24:22,366 INFO L82 PathProgramCache]: Analyzing trace with hash -930868670, now seen corresponding path program 1 times [2021-02-22 02:24:22,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:24:22,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827673643] [2021-02-22 02:24:22,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:24:22,485 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:24:22,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:24:22,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:22,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:24:22,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:22,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:24:22,913 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-02-22 02:24:22,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:24:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:24:22,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:22,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:24:23,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:24:23,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827673643] [2021-02-22 02:24:23,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:24:23,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 02:24:23,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668025037] [2021-02-22 02:24:23,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 02:24:23,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:24:23,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 02:24:23,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:24:23,050 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2021-02-22 02:24:23,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:24:23,298 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2021-02-22 02:24:23,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 02:24:23,305 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2021-02-22 02:24:23,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:24:23,320 INFO L225 Difference]: With dead ends: 55 [2021-02-22 02:24:23,321 INFO L226 Difference]: Without dead ends: 34 [2021-02-22 02:24:23,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:24:23,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-02-22 02:24:23,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-02-22 02:24:23,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-02-22 02:24:23,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2021-02-22 02:24:23,438 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 27 [2021-02-22 02:24:23,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:24:23,439 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2021-02-22 02:24:23,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 02:24:23,440 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2021-02-22 02:24:23,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-22 02:24:23,442 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:24:23,442 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, 1, 1, 1, 1, 1] [2021-02-22 02:24:23,443 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:24:23,444 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:24:23,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:24:23,448 INFO L82 PathProgramCache]: Analyzing trace with hash -944721485, now seen corresponding path program 1 times [2021-02-22 02:24:23,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:24:23,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713847882] [2021-02-22 02:24:23,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:24:23,458 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:24:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:24:23,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:23,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:24:23,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:23,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:24:23,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:23,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:24:23,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:23,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:24:23,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:23,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:24:23,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:24:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:24:23,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:23,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:24:23,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:24:23,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713847882] [2021-02-22 02:24:23,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:24:23,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 02:24:23,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246102801] [2021-02-22 02:24:23,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 02:24:23,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:24:23,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 02:24:23,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-22 02:24:23,819 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 6 states. [2021-02-22 02:24:24,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:24:24,092 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2021-02-22 02:24:24,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 02:24:24,093 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2021-02-22 02:24:24,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:24:24,097 INFO L225 Difference]: With dead ends: 46 [2021-02-22 02:24:24,098 INFO L226 Difference]: Without dead ends: 41 [2021-02-22 02:24:24,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-22 02:24:24,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-02-22 02:24:24,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2021-02-22 02:24:24,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-02-22 02:24:24,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-02-22 02:24:24,116 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 27 [2021-02-22 02:24:24,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:24:24,116 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-02-22 02:24:24,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 02:24:24,117 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2021-02-22 02:24:24,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-22 02:24:24,118 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:24:24,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:24:24,119 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:24:24,119 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:24:24,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:24:24,120 INFO L82 PathProgramCache]: Analyzing trace with hash 849742705, now seen corresponding path program 1 times [2021-02-22 02:24:24,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:24:24,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682651267] [2021-02-22 02:24:24,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:24:24,173 WARN L141 QuantifierPusher]: treesize reduction 3, result has 85.7 percent of original size [2021-02-22 02:24:24,190 WARN L147 QuantifierPusher]: treesize reduction 3, result has 85.7 percent of original size 18 [2021-02-22 02:24:24,199 WARN L141 QuantifierPusher]: treesize reduction 3, result has 85.7 percent of original size [2021-02-22 02:24:24,201 WARN L147 QuantifierPusher]: treesize reduction 3, result has 85.7 percent of original size 18 [2021-02-22 02:24:24,215 WARN L141 QuantifierPusher]: treesize reduction 16, result has 33.3 percent of original size [2021-02-22 02:24:24,235 WARN L147 QuantifierPusher]: treesize reduction 16, result has 33.3 percent of original size 8 [2021-02-22 02:24:24,241 WARN L141 QuantifierPusher]: treesize reduction 3, result has 89.7 percent of original size [2021-02-22 02:24:24,246 WARN L147 QuantifierPusher]: treesize reduction 3, result has 89.7 percent of original size 26 [2021-02-22 02:24:24,250 WARN L141 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-02-22 02:24:24,252 WARN L147 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size 16 [2021-02-22 02:24:24,255 WARN L141 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-02-22 02:24:24,258 WARN L147 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size 16 [2021-02-22 02:24:24,268 WARN L141 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size [2021-02-22 02:24:24,274 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-22 02:24:24,281 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:24,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:24:24,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:24,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-22 02:24:24,293 WARN L147 QuantifierPusher]: treesize reduction 2, result has 91.7 percent of original size 22 [2021-02-22 02:24:24,299 WARN L141 QuantifierPusher]: treesize reduction 2, result has 96.4 percent of original size [2021-02-22 02:24:24,305 WARN L147 QuantifierPusher]: treesize reduction 2, result has 96.4 percent of original size 53 [2021-02-22 02:24:24,307 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-22 02:24:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:24:24,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:24,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:24:24,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:24,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:24:24,529 WARN L141 QuantifierPusher]: treesize reduction 78, result has 35.0 percent of original size [2021-02-22 02:24:24,532 WARN L147 QuantifierPusher]: treesize reduction 78, result has 35.0 percent of original size 42 [2021-02-22 02:24:24,547 WARN L141 QuantifierPusher]: treesize reduction 99, result has 23.3 percent of original size [2021-02-22 02:24:24,549 WARN L147 QuantifierPusher]: treesize reduction 99, result has 23.3 percent of original size 30 [2021-02-22 02:24:24,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:24,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:24:24,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:24,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:24:24,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:24,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:24:24,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:24:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:24:24,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:24,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:24:24,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:24:24,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:24,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-22 02:24:24,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:24,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:24:24,660 WARN L141 QuantifierPusher]: treesize reduction 9, result has 92.8 percent of original size [2021-02-22 02:24:24,664 WARN L147 QuantifierPusher]: treesize reduction 9, result has 92.8 percent of original size 116 [2021-02-22 02:24:24,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-02-22 02:24:24,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:24,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:24:24,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:24,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-22 02:24:24,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:24,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-22 02:24:24,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:24,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:24:24,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:24,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-22 02:24:24,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-22 02:24:24,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:24,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-22 02:24:24,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:24:24,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:24:24,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682651267] [2021-02-22 02:24:24,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:24:24,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-22 02:24:24,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166433141] [2021-02-22 02:24:24,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-22 02:24:24,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:24:24,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-22 02:24:24,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-02-22 02:24:24,845 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 11 states. [2021-02-22 02:24:25,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:24:25,392 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2021-02-22 02:24:25,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-22 02:24:25,392 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2021-02-22 02:24:25,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:24:25,393 INFO L225 Difference]: With dead ends: 49 [2021-02-22 02:24:25,393 INFO L226 Difference]: Without dead ends: 0 [2021-02-22 02:24:25,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-02-22 02:24:25,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-22 02:24:25,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-22 02:24:25,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-22 02:24:25,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-22 02:24:25,396 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2021-02-22 02:24:25,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:24:25,397 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-22 02:24:25,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-22 02:24:25,397 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-22 02:24:25,397 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-22 02:24:25,398 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 02:24:25,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-22 02:24:26,229 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 7) no Hoare annotation was computed. [2021-02-22 02:24:26,229 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 7) no Hoare annotation was computed. [2021-02-22 02:24:26,231 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 7) no Hoare annotation was computed. [2021-02-22 02:24:26,231 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 02:24:26,231 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-22 02:24:26,231 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-02-22 02:24:26,232 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)|) (= ~SIZE~0 |old(~SIZE~0)|) (= |#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|)) [2021-02-22 02:24:26,233 INFO L192 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: true [2021-02-22 02:24:26,233 INFO L192 CegarLoopUtils]: At program point L7-1(line 7) the Hoare annotation is: true [2021-02-22 02:24:26,233 INFO L192 CegarLoopUtils]: At program point L7-2(line 7) the Hoare annotation is: true [2021-02-22 02:24:26,233 INFO L192 CegarLoopUtils]: At program point L7-3(line 7) the Hoare annotation is: true [2021-02-22 02:24:26,233 INFO L192 CegarLoopUtils]: At program point L7-4(line 7) the Hoare annotation is: true [2021-02-22 02:24:26,233 INFO L192 CegarLoopUtils]: At program point L7-5(line 7) the Hoare annotation is: true [2021-02-22 02:24:26,233 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-22 02:24:26,233 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-22 02:24:26,234 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 02:24:26,234 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-22 02:24:26,234 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-22 02:24:26,234 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 9 11) no Hoare annotation was computed. [2021-02-22 02:24:26,234 INFO L189 CegarLoopUtils]: For program point L10(line 10) no Hoare annotation was computed. [2021-02-22 02:24:26,234 INFO L189 CegarLoopUtils]: For program point L10-1(line 10) no Hoare annotation was computed. [2021-02-22 02:24:26,234 INFO L189 CegarLoopUtils]: For program point L10-3(lines 9 11) no Hoare annotation was computed. [2021-02-22 02:24:26,235 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed. [2021-02-22 02:24:26,240 INFO L185 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (<= main_~i~0 (* 3 (div main_~i~0 3))) [2021-02-22 02:24:26,240 INFO L185 CegarLoopUtils]: At program point L27-1(lines 27 30) the Hoare annotation is: (<= main_~i~0 (* 3 (div main_~i~0 3))) [2021-02-22 02:24:26,241 INFO L185 CegarLoopUtils]: At program point L27-2(line 27) the Hoare annotation is: (<= main_~i~0 (* 3 (div main_~i~0 3))) [2021-02-22 02:24:26,241 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 20 34) the Hoare annotation is: true [2021-02-22 02:24:26,246 INFO L192 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: true [2021-02-22 02:24:26,247 INFO L185 CegarLoopUtils]: At program point L27-4(line 27) the Hoare annotation is: (<= main_~i~0 (* 3 (div main_~i~0 3))) [2021-02-22 02:24:26,247 INFO L185 CegarLoopUtils]: At program point L25-2(lines 25 31) the Hoare annotation is: (<= main_~i~0 (* 3 (div main_~i~0 3))) [2021-02-22 02:24:26,247 INFO L192 CegarLoopUtils]: At program point L23-1(line 23) the Hoare annotation is: true [2021-02-22 02:24:26,247 INFO L185 CegarLoopUtils]: At program point L27-5(lines 25 31) the Hoare annotation is: (<= main_~i~0 (* 3 (div main_~i~0 3))) [2021-02-22 02:24:26,247 INFO L192 CegarLoopUtils]: At program point L21(line 21) the Hoare annotation is: true [2021-02-22 02:24:26,247 INFO L192 CegarLoopUtils]: At program point L21-1(line 21) the Hoare annotation is: true [2021-02-22 02:24:26,248 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 20 34) the Hoare annotation is: true [2021-02-22 02:24:26,248 INFO L192 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: true [2021-02-22 02:24:26,248 INFO L185 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: (<= main_~i~0 (* 3 (div main_~i~0 3))) [2021-02-22 02:24:26,250 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 20 34) the Hoare annotation is: true [2021-02-22 02:24:26,251 INFO L185 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: (<= main_~i~0 (* 3 (div main_~i~0 3))) [2021-02-22 02:24:26,251 INFO L192 CegarLoopUtils]: At program point L24(line 24) the Hoare annotation is: true [2021-02-22 02:24:26,251 INFO L185 CegarLoopUtils]: At program point L24-1(line 24) the Hoare annotation is: (= main_~i~0 0) [2021-02-22 02:24:26,251 INFO L192 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: true [2021-02-22 02:24:26,251 INFO L192 CegarLoopUtils]: At program point L22-1(line 22) the Hoare annotation is: true [2021-02-22 02:24:26,251 INFO L192 CegarLoopUtils]: At program point L22-2(line 22) the Hoare annotation is: true [2021-02-22 02:24:26,251 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 12 17) the Hoare annotation is: true [2021-02-22 02:24:26,253 INFO L185 CegarLoopUtils]: At program point L14(line 14) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-22 02:24:26,254 INFO L185 CegarLoopUtils]: At program point L13(lines 13 15) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-22 02:24:26,254 INFO L185 CegarLoopUtils]: At program point L14-1(line 14) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-22 02:24:26,254 INFO L192 CegarLoopUtils]: At program point L13-2(lines 12 17) the Hoare annotation is: true [2021-02-22 02:24:26,254 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 12 17) the Hoare annotation is: true [2021-02-22 02:24:26,254 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-22 02:24:26,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:24:26 BoogieIcfgContainer [2021-02-22 02:24:26,277 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:24:26,285 INFO L168 Benchmark]: Toolchain (without parser) took 5113.69 ms. Allocated memory was 151.0 MB in the beginning and 187.7 MB in the end (delta: 36.7 MB). Free memory was 128.5 MB in the beginning and 128.4 MB in the end (delta: 114.6 kB). Peak memory consumption was 97.0 MB. Max. memory is 8.0 GB. [2021-02-22 02:24:26,286 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:24:26,290 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.72 ms. Allocated memory is still 151.0 MB. Free memory was 127.4 MB in the beginning and 117.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-22 02:24:26,294 INFO L168 Benchmark]: Boogie Preprocessor took 51.51 ms. Allocated memory is still 151.0 MB. Free memory was 117.8 MB in the beginning and 116.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-22 02:24:26,295 INFO L168 Benchmark]: RCFGBuilder took 677.65 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 132.6 MB in the end (delta: -16.1 MB). Peak memory consumption was 16.4 MB. Max. memory is 8.0 GB. [2021-02-22 02:24:26,299 INFO L168 Benchmark]: TraceAbstraction took 4050.62 ms. Allocated memory was 151.0 MB in the beginning and 187.7 MB in the end (delta: 36.7 MB). Free memory was 132.1 MB in the beginning and 128.4 MB in the end (delta: 3.7 MB). Peak memory consumption was 100.5 MB. Max. memory is 8.0 GB. [2021-02-22 02:24:26,302 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 309.72 ms. Allocated memory is still 151.0 MB. Free memory was 127.4 MB in the beginning and 117.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 51.51 ms. Allocated memory is still 151.0 MB. Free memory was 117.8 MB in the beginning and 116.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 677.65 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 132.6 MB in the end (delta: -16.1 MB). Peak memory consumption was 16.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4050.62 ms. Allocated memory was 151.0 MB in the beginning and 187.7 MB in the end (delta: 36.7 MB). Free memory was 132.1 MB in the beginning and 128.4 MB in the end (delta: 3.7 MB). Peak memory consumption was 100.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: 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: 25]: Loop Invariant Derived loop invariant: i <= 3 * (i / 3) - ProcedureContractResult [Line: 20]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 12]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 127 SDslu, 106 SDs, 0 SdLazy, 205 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 43 LocationsWithAnnotation, 64 PreInvPairs, 92 NumberOfFragments, 139 HoareAnnotationTreeSize, 64 FomulaSimplifications, 1296 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 43 FomulaSimplificationsInter, 1541 FormulaSimplificationTreeSizeReductionInter, 0.5s 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...