/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 06:49:06,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 06:49:06,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 06:49:06,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 06:49:06,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 06:49:06,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 06:49:06,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 06:49:06,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 06:49:06,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 06:49:06,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 06:49:06,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 06:49:06,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 06:49:06,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 06:49:06,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 06:49:06,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 06:49:06,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 06:49:06,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 06:49:06,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 06:49:06,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 06:49:06,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 06:49:06,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 06:49:06,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 06:49:06,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 06:49:06,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 06:49:06,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 06:49:06,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 06:49:06,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 06:49:06,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 06:49:06,617 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 06:49:06,630 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 06:49:06,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 06:49:06,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 06:49:06,633 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 06:49:06,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 06:49:06,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 06:49:06,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 06:49:06,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 06:49:06,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 06:49:06,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 06:49:06,635 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 06:49:06,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 06:49:06,635 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 06:49:06,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 06:49:06,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 06:49:06,636 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 06:49:06,637 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 06:49:06,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 06:49:06,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 06:49:06,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 06:49:06,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 06:49:06,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 06:49:06,639 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 06:49:07,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 06:49:07,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 06:49:07,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 06:49:07,083 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 06:49:07,084 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 06:49:07,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt2.c [2020-11-07 06:49:07,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3237f1ac/33dd104154ab4075b2e556a4e5726245/FLAG5bf266306 [2020-11-07 06:49:07,767 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 06:49:07,768 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt2.c [2020-11-07 06:49:07,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3237f1ac/33dd104154ab4075b2e556a4e5726245/FLAG5bf266306 [2020-11-07 06:49:08,141 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3237f1ac/33dd104154ab4075b2e556a4e5726245 [2020-11-07 06:49:08,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 06:49:08,159 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 06:49:08,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 06:49:08,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 06:49:08,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 06:49:08,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:49:08" (1/1) ... [2020-11-07 06:49:08,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b8f7d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:49:08, skipping insertion in model container [2020-11-07 06:49:08,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:49:08" (1/1) ... [2020-11-07 06:49:08,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 06:49:08,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 06:49:08,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:49:08,365 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 06:49:08,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:49:08,405 INFO L208 MainTranslator]: Completed translation [2020-11-07 06:49:08,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:49:08 WrapperNode [2020-11-07 06:49:08,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 06:49:08,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 06:49:08,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 06:49:08,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 06:49:08,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:49:08" (1/1) ... [2020-11-07 06:49:08,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:49:08" (1/1) ... [2020-11-07 06:49:08,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:49:08" (1/1) ... [2020-11-07 06:49:08,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:49:08" (1/1) ... [2020-11-07 06:49:08,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:49:08" (1/1) ... [2020-11-07 06:49:08,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:49:08" (1/1) ... [2020-11-07 06:49:08,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:49:08" (1/1) ... [2020-11-07 06:49:08,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 06:49:08,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 06:49:08,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 06:49:08,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 06:49:08,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:49:08" (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 [2020-11-07 06:49:08,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 06:49:08,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 06:49:08,548 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 06:49:08,548 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 06:49:08,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 06:49:08,549 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 06:49:08,549 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 06:49:08,550 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 06:49:08,550 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 06:49:08,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 06:49:08,550 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 06:49:08,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 06:49:08,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-11-07 06:49:08,551 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 06:49:08,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 06:49:08,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 06:49:08,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 06:49:08,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 06:49:08,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 06:49:08,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 06:49:09,181 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 06:49:09,182 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 06:49:09,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:49:09 BoogieIcfgContainer [2020-11-07 06:49:09,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 06:49:09,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 06:49:09,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 06:49:09,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 06:49:09,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:49:08" (1/3) ... [2020-11-07 06:49:09,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8cf2b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:49:09, skipping insertion in model container [2020-11-07 06:49:09,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:49:08" (2/3) ... [2020-11-07 06:49:09,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8cf2b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:49:09, skipping insertion in model container [2020-11-07 06:49:09,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:49:09" (3/3) ... [2020-11-07 06:49:09,194 INFO L111 eAbstractionObserver]: Analyzing ICFG sumt2.c [2020-11-07 06:49:09,213 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 06:49:09,218 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 06:49:09,231 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 06:49:09,258 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 06:49:09,259 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 06:49:09,259 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 06:49:09,259 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 06:49:09,259 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 06:49:09,259 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 06:49:09,259 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 06:49:09,260 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 06:49:09,282 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-11-07 06:49:09,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-07 06:49:09,293 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:49:09,294 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] [2020-11-07 06:49:09,295 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:49:09,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:49:09,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1488124333, now seen corresponding path program 1 times [2020-11-07 06:49:09,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:49:09,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276909726] [2020-11-07 06:49:09,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:49:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:09,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:49:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:09,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:49:09,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276909726] [2020-11-07 06:49:09,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:49:09,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 06:49:09,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216158006] [2020-11-07 06:49:09,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 06:49:09,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:49:09,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 06:49:09,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-07 06:49:09,948 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 8 states. [2020-11-07 06:49:10,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:49:10,679 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2020-11-07 06:49:10,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-07 06:49:10,681 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-11-07 06:49:10,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:49:10,690 INFO L225 Difference]: With dead ends: 74 [2020-11-07 06:49:10,690 INFO L226 Difference]: Without dead ends: 37 [2020-11-07 06:49:10,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-11-07 06:49:10,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-07 06:49:10,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-11-07 06:49:10,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-07 06:49:10,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-11-07 06:49:10,745 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 29 [2020-11-07 06:49:10,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:49:10,746 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-11-07 06:49:10,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 06:49:10,746 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-11-07 06:49:10,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-07 06:49:10,748 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:49:10,748 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, 1] [2020-11-07 06:49:10,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 06:49:10,748 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:49:10,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:49:10,749 INFO L82 PathProgramCache]: Analyzing trace with hash -650798693, now seen corresponding path program 1 times [2020-11-07 06:49:10,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:49:10,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447863875] [2020-11-07 06:49:10,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:49:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:11,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:49:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:11,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:49:11,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447863875] [2020-11-07 06:49:11,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:49:11,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-11-07 06:49:11,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133661261] [2020-11-07 06:49:11,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 06:49:11,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:49:11,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 06:49:11,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-11-07 06:49:11,260 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 12 states. [2020-11-07 06:49:14,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:49:14,012 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2020-11-07 06:49:14,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 06:49:14,013 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-11-07 06:49:14,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:49:14,015 INFO L225 Difference]: With dead ends: 47 [2020-11-07 06:49:14,015 INFO L226 Difference]: Without dead ends: 41 [2020-11-07 06:49:14,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2020-11-07 06:49:14,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-07 06:49:14,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-11-07 06:49:14,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-07 06:49:14,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-11-07 06:49:14,030 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 33 [2020-11-07 06:49:14,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:49:14,031 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-11-07 06:49:14,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 06:49:14,031 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-11-07 06:49:14,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-07 06:49:14,032 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:49:14,033 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2020-11-07 06:49:14,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 06:49:14,033 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:49:14,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:49:14,034 INFO L82 PathProgramCache]: Analyzing trace with hash -225228573, now seen corresponding path program 2 times [2020-11-07 06:49:14,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:49:14,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272250795] [2020-11-07 06:49:14,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:49:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:14,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:49:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:14,163 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:49:14,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272250795] [2020-11-07 06:49:14,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:49:14,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-07 06:49:14,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827580894] [2020-11-07 06:49:14,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 06:49:14,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:49:14,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 06:49:14,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-07 06:49:14,166 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 5 states. [2020-11-07 06:49:14,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:49:14,366 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2020-11-07 06:49:14,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-07 06:49:14,367 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-11-07 06:49:14,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:49:14,368 INFO L225 Difference]: With dead ends: 53 [2020-11-07 06:49:14,369 INFO L226 Difference]: Without dead ends: 42 [2020-11-07 06:49:14,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-07 06:49:14,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-07 06:49:14,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-11-07 06:49:14,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-07 06:49:14,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-11-07 06:49:14,384 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 37 [2020-11-07 06:49:14,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:49:14,385 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-11-07 06:49:14,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 06:49:14,385 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-11-07 06:49:14,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-07 06:49:14,386 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:49:14,386 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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, 1] [2020-11-07 06:49:14,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 06:49:14,387 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:49:14,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:49:14,388 INFO L82 PathProgramCache]: Analyzing trace with hash -419160957, now seen corresponding path program 1 times [2020-11-07 06:49:14,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:49:14,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25055177] [2020-11-07 06:49:14,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:49:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:15,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:49:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:15,065 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:49:15,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25055177] [2020-11-07 06:49:15,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:49:15,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-11-07 06:49:15,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107289870] [2020-11-07 06:49:15,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-07 06:49:15,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:49:15,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-07 06:49:15,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-11-07 06:49:15,069 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 14 states. [2020-11-07 06:49:15,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:49:15,909 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2020-11-07 06:49:15,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-07 06:49:15,909 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-11-07 06:49:15,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:49:15,912 INFO L225 Difference]: With dead ends: 52 [2020-11-07 06:49:15,912 INFO L226 Difference]: Without dead ends: 46 [2020-11-07 06:49:15,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2020-11-07 06:49:15,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-07 06:49:15,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2020-11-07 06:49:15,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-07 06:49:15,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-11-07 06:49:15,948 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 37 [2020-11-07 06:49:15,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:49:15,954 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-11-07 06:49:15,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-07 06:49:15,954 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-11-07 06:49:15,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-07 06:49:15,956 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:49:15,956 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 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] [2020-11-07 06:49:15,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 06:49:15,957 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:49:15,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:49:15,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1642719285, now seen corresponding path program 2 times [2020-11-07 06:49:15,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:49:15,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577180983] [2020-11-07 06:49:15,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:49:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:16,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:49:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:16,884 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:49:16,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577180983] [2020-11-07 06:49:16,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:49:16,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-11-07 06:49:16,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162133384] [2020-11-07 06:49:16,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-07 06:49:16,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:49:16,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-07 06:49:16,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2020-11-07 06:49:16,894 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 20 states. [2020-11-07 06:49:20,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:49:20,515 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2020-11-07 06:49:20,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 06:49:20,516 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 41 [2020-11-07 06:49:20,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:49:20,517 INFO L225 Difference]: With dead ends: 55 [2020-11-07 06:49:20,517 INFO L226 Difference]: Without dead ends: 49 [2020-11-07 06:49:20,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=194, Invalid=928, Unknown=0, NotChecked=0, Total=1122 [2020-11-07 06:49:20,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-07 06:49:20,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-11-07 06:49:20,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-07 06:49:20,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2020-11-07 06:49:20,543 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 41 [2020-11-07 06:49:20,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:49:20,547 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2020-11-07 06:49:20,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-07 06:49:20,547 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2020-11-07 06:49:20,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-07 06:49:20,549 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:49:20,549 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 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] [2020-11-07 06:49:20,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 06:49:20,551 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:49:20,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:49:20,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1836651669, now seen corresponding path program 3 times [2020-11-07 06:49:20,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:49:20,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099975632] [2020-11-07 06:49:20,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:49:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:20,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:49:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:20,726 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:49:20,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099975632] [2020-11-07 06:49:20,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:49:20,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-07 06:49:20,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876399637] [2020-11-07 06:49:20,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 06:49:20,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:49:20,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 06:49:20,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 06:49:20,732 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 6 states. [2020-11-07 06:49:20,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:49:20,991 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-11-07 06:49:20,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 06:49:20,992 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-11-07 06:49:20,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:49:20,993 INFO L225 Difference]: With dead ends: 61 [2020-11-07 06:49:20,993 INFO L226 Difference]: Without dead ends: 50 [2020-11-07 06:49:20,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-07 06:49:20,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-07 06:49:21,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-11-07 06:49:21,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-07 06:49:21,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-11-07 06:49:21,025 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 41 [2020-11-07 06:49:21,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:49:21,030 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-11-07 06:49:21,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 06:49:21,030 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-11-07 06:49:21,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-07 06:49:21,031 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:49:21,031 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 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] [2020-11-07 06:49:21,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 06:49:21,032 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:49:21,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:49:21,035 INFO L82 PathProgramCache]: Analyzing trace with hash 773456563, now seen corresponding path program 4 times [2020-11-07 06:49:21,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:49:21,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127000565] [2020-11-07 06:49:21,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:49:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:49:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:22,017 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:49:22,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127000565] [2020-11-07 06:49:22,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:49:22,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-11-07 06:49:22,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389379268] [2020-11-07 06:49:22,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-07 06:49:22,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:49:22,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-07 06:49:22,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2020-11-07 06:49:22,022 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 22 states. [2020-11-07 06:49:23,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:49:23,893 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2020-11-07 06:49:23,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-07 06:49:23,894 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 45 [2020-11-07 06:49:23,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:49:23,895 INFO L225 Difference]: With dead ends: 51 [2020-11-07 06:49:23,895 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 06:49:23,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=226, Invalid=1180, Unknown=0, NotChecked=0, Total=1406 [2020-11-07 06:49:23,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 06:49:23,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 06:49:23,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 06:49:23,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 06:49:23,898 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2020-11-07 06:49:23,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:49:23,898 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 06:49:23,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-07 06:49:23,898 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 06:49:23,898 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 06:49:23,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 06:49:23,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 06:49:24,675 WARN L194 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 62 [2020-11-07 06:49:27,248 WARN L194 SmtUtils]: Spent 2.49 s on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2020-11-07 06:49:27,858 WARN L194 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 39 [2020-11-07 06:49:28,105 WARN L194 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 49 [2020-11-07 06:49:28,315 WARN L194 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 25 [2020-11-07 06:49:28,736 WARN L194 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 56 [2020-11-07 06:49:28,804 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-11-07 06:49:28,804 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-07 06:49:28,804 INFO L269 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-11-07 06:49:28,804 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-11-07 06:49:28,804 INFO L269 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-11-07 06:49:28,805 INFO L269 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-11-07 06:49:28,805 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 06:49:28,805 INFO L269 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-11-07 06:49:28,805 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 06:49:28,805 INFO L269 CegarLoopResult]: At program point L3-5(line 3) the Hoare annotation is: true [2020-11-07 06:49:28,806 INFO L262 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2020-11-07 06:49:28,806 INFO L262 CegarLoopResult]: 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|)) [2020-11-07 06:49:28,806 INFO L269 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-11-07 06:49:28,806 INFO L269 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-11-07 06:49:28,806 INFO L262 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2020-11-07 06:49:28,807 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 06:49:28,807 INFO L262 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2020-11-07 06:49:28,807 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 06:49:28,807 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 06:49:28,807 INFO L266 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 5 7) no Hoare annotation was computed. [2020-11-07 06:49:28,807 INFO L266 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-11-07 06:49:28,807 INFO L266 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-11-07 06:49:28,807 INFO L266 CegarLoopResult]: For program point L6-3(lines 5 7) no Hoare annotation was computed. [2020-11-07 06:49:28,808 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2020-11-07 06:49:28,808 INFO L269 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-11-07 06:49:28,808 INFO L262 CegarLoopResult]: At program point L25(lines 25 28) the Hoare annotation is: (let ((.cse2 (* 4294967296 (div main_~n~0 4294967296))) (.cse7 (+ main_~i~0 main_~j~0))) (let ((.cse6 (* 4294967296 (div main_~l~0 4294967296))) (.cse3 (+ main_~i~0 main_~j~0 main_~n~0)) (.cse0 (<= main_~l~0 (+ (* 4294967296 (div (+ main_~i~0 main_~j~0 (- 2)) 4294967296)) 20000002))) (.cse1 (<= .cse7 main_~l~0)) (.cse4 (<= main_~l~0 .cse7)) (.cse9 (div main_~l~0 2)) (.cse8 (= main_~j~0 0)) (.cse5 (<= main_~n~0 (+ .cse2 20000001)))) (or (not (<= ~SIZE~0 20000001)) (and .cse0 .cse1 (<= (+ .cse2 main_~l~0 4) .cse3) .cse4 .cse5 (<= (+ .cse6 3) .cse7)) (and (<= main_~i~0 main_~l~0) (<= 1 main_~l~0) .cse8 (<= (+ .cse6 1) main_~i~0) (<= (+ .cse2 main_~l~0 2) (+ main_~i~0 main_~n~0)) (<= .cse9 0) .cse5) (and (<= (+ .cse2 main_~l~0 3) .cse3) .cse0 .cse1 .cse4 (<= 2 main_~l~0) (<= main_~l~0 (* 2 .cse9)) .cse5) (and (= main_~i~0 0) .cse8 (= main_~l~0 0) .cse5 (<= (+ .cse2 1) main_~n~0)) (not (<= 20000001 ~SIZE~0))))) [2020-11-07 06:49:28,808 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 16 33) the Hoare annotation is: true [2020-11-07 06:49:28,809 INFO L262 CegarLoopResult]: At program point L25-2(lines 25 28) the Hoare annotation is: (let ((.cse0 (* 4294967296 (div main_~n~0 4294967296)))) (let ((.cse1 (<= main_~n~0 (+ .cse0 20000001))) (.cse4 (<= ~SIZE~0 20000001)) (.cse6 (+ main_~l~0 1)) (.cse5 (+ main_~i~0 main_~j~0))) (let ((.cse2 (let ((.cse7 (+ main_~i~0 main_~j~0 main_~n~0)) (.cse8 (<= .cse6 .cse5))) (or (and (<= (+ .cse0 main_~l~0 4) .cse7) .cse8 .cse1 .cse4) (and (<= main_~l~0 (+ (* 4294967296 (div (+ main_~i~0 main_~j~0 (- 2)) 4294967296)) 20000001)) (<= (+ .cse0 main_~l~0 3) .cse7) .cse8 .cse1 .cse4)))) (.cse3 (<= .cse5 .cse6))) (or (and (<= (+ .cse0 2) (+ main_~i~0 main_~n~0)) (= main_~j~0 0) (<= (+ (* 4294967296 (div main_~l~0 4294967296)) 1) (+ main_~i~0 main_~l~0)) (= main_~l~0 0) .cse1 (<= main_~i~0 1)) (and (<= 1 main_~l~0) (<= main_~l~0 1) .cse2 .cse3) (not .cse4) (and .cse2 .cse3 (<= main_~l~0 (+ (* 4294967296 (div (+ main_~i~0 main_~j~0 (- 3)) 4294967296)) 20000002))) (not (<= 20000001 ~SIZE~0)))))) [2020-11-07 06:49:28,809 INFO L262 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0)) (and (= main_~i~0 0) (= main_~l~0 0) (<= main_~n~0 (+ (* 4294967296 (div main_~n~0 4294967296)) 20000001)))) [2020-11-07 06:49:28,809 INFO L262 CegarLoopResult]: At program point L23-2(lines 23 30) the Hoare annotation is: (let ((.cse6 (* 4294967296 (div main_~n~0 4294967296)))) (let ((.cse1 (* 4294967296 (div main_~l~0 4294967296))) (.cse2 (<= main_~n~0 (+ .cse6 20000001))) (.cse5 (+ main_~i~0 main_~j~0))) (let ((.cse3 (<= main_~l~0 .cse5)) (.cse4 (let ((.cse7 (<= .cse5 main_~l~0))) (or (and (<= (+ .cse6 main_~l~0 3) (+ main_~i~0 main_~j~0 main_~n~0)) .cse7 .cse2) (and .cse7 (<= (+ .cse1 2) .cse5) .cse2)))) (.cse0 (= main_~j~0 0))) (or (and (<= main_~i~0 main_~l~0) (<= 1 main_~l~0) .cse0 (<= (+ .cse1 1) main_~i~0) (<= (div main_~l~0 2) 0) .cse2) (and (<= main_~l~0 (+ (* 4294967296 (div (+ main_~i~0 main_~j~0 (- 2)) 4294967296)) 20000002)) .cse3 .cse4 (<= 2 main_~l~0)) (and .cse3 .cse4 (<= (+ .cse1 3) .cse5)) (and (= main_~i~0 0) .cse0 (= main_~l~0 0) .cse2) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0)))))) [2020-11-07 06:49:28,810 INFO L262 CegarLoopResult]: At program point L23-3(lines 23 30) the Hoare annotation is: (or (let ((.cse2 (div (+ main_~i~0 main_~j~0) 4294967296)) (.cse3 (div main_~l~0 4294967296))) (let ((.cse1 (* 4294967296 .cse3)) (.cse0 (+ (* 4294967296 .cse2) main_~l~0))) (and (< .cse0 (+ main_~i~0 main_~j~0 .cse1 1)) (< .cse2 (+ .cse3 1)) (<= (+ main_~i~0 main_~j~0 .cse1) .cse0)))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-11-07 06:49:28,810 INFO L262 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (or (= main_~l~0 0) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-11-07 06:49:28,810 INFO L269 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: true [2020-11-07 06:49:28,810 INFO L269 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: true [2020-11-07 06:49:28,810 INFO L269 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: true [2020-11-07 06:49:28,810 INFO L269 CegarLoopResult]: At program point L17-2(line 17) the Hoare annotation is: true [2020-11-07 06:49:28,811 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 16 33) the Hoare annotation is: true [2020-11-07 06:49:28,811 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 16 33) the Hoare annotation is: true [2020-11-07 06:49:28,811 INFO L262 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (let ((.cse1 (* 4294967296 (div main_~n~0 4294967296)))) (let ((.cse2 (<= main_~n~0 (+ .cse1 20000001))) (.cse0 (* 4294967296 (div main_~l~0 4294967296)))) (or (not (<= ~SIZE~0 20000001)) (and (<= main_~i~0 main_~l~0) (<= 1 main_~l~0) (= main_~j~0 0) (<= main_~l~0 1) (<= (+ .cse0 1) main_~i~0) (<= (+ .cse1 main_~l~0 2) (+ main_~i~0 main_~n~0)) .cse2) (let ((.cse3 (+ main_~i~0 main_~j~0))) (and (<= main_~l~0 (+ (* 4294967296 (div (+ main_~i~0 main_~j~0 (- 2)) 4294967296)) 20000002)) (<= .cse3 main_~l~0) (<= (+ .cse1 main_~l~0 4) (+ main_~i~0 main_~j~0 main_~n~0)) (<= main_~l~0 .cse3) .cse2 (<= (+ .cse0 3) .cse3))) (not (<= 20000001 ~SIZE~0))))) [2020-11-07 06:49:28,811 INFO L262 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (* 4294967296 (div main_~n~0 4294967296)))) (let ((.cse2 (<= main_~n~0 (+ .cse0 20000001)))) (or (let ((.cse1 (+ main_~i~0 main_~j~0))) (and (<= (+ .cse0 main_~l~0 3) (+ main_~i~0 main_~j~0 main_~n~0)) (<= main_~l~0 (+ (* 4294967296 (div (+ main_~i~0 main_~j~0 (- 2)) 4294967296)) 20000002)) (<= .cse1 main_~l~0) (<= main_~l~0 .cse1) .cse2)) (not (<= ~SIZE~0 20000001)) (and (= main_~i~0 0) (= main_~j~0 0) (= main_~l~0 0) .cse2 (<= (+ .cse0 1) main_~n~0)) (not (<= 20000001 ~SIZE~0))))) [2020-11-07 06:49:28,812 INFO L262 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (or (and (= main_~i~0 0) (= main_~j~0 0) (= main_~l~0 0) (<= main_~n~0 (+ (* 4294967296 (div main_~n~0 4294967296)) 20000001))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-11-07 06:49:28,812 INFO L262 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (and (= main_~l~0 0) (<= main_~n~0 (+ (* 4294967296 (div main_~n~0 4294967296)) 20000001))) (not (<= 20000001 ~SIZE~0))) [2020-11-07 06:49:28,812 INFO L262 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (or (= main_~l~0 0) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-11-07 06:49:28,812 INFO L262 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (or (= main_~l~0 0) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-11-07 06:49:28,812 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 8 13) the Hoare annotation is: true [2020-11-07 06:49:28,812 INFO L262 CegarLoopResult]: At program point L10(line 10) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 06:49:28,813 INFO L262 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 8 13) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 06:49:28,813 INFO L262 CegarLoopResult]: At program point L9(lines 9 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 06:49:28,813 INFO L262 CegarLoopResult]: At program point L10-1(line 10) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 06:49:28,813 INFO L262 CegarLoopResult]: At program point L9-2(lines 8 13) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 06:49:28,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:49:28 BoogieIcfgContainer [2020-11-07 06:49:28,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 06:49:28,850 INFO L168 Benchmark]: Toolchain (without parser) took 20698.72 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 131.8 MB in the beginning and 156.5 MB in the end (delta: -24.7 MB). Peak memory consumption was 101.1 MB. Max. memory is 8.0 GB. [2020-11-07 06:49:28,851 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 155.2 MB. Free memory is still 130.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 06:49:28,852 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.86 ms. Allocated memory is still 155.2 MB. Free memory was 131.2 MB in the beginning and 121.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 06:49:28,852 INFO L168 Benchmark]: Boogie Preprocessor took 42.20 ms. Allocated memory is still 155.2 MB. Free memory was 121.2 MB in the beginning and 119.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 06:49:28,853 INFO L168 Benchmark]: RCFGBuilder took 733.90 ms. Allocated memory is still 155.2 MB. Free memory was 119.7 MB in the beginning and 136.7 MB in the end (delta: -17.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. [2020-11-07 06:49:28,854 INFO L168 Benchmark]: TraceAbstraction took 19662.16 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 136.2 MB in the beginning and 156.5 MB in the end (delta: -20.3 MB). Peak memory consumption was 106.1 MB. Max. memory is 8.0 GB. [2020-11-07 06:49:28,859 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 155.2 MB. Free memory is still 130.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 242.86 ms. Allocated memory is still 155.2 MB. Free memory was 131.2 MB in the beginning and 121.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.20 ms. Allocated memory is still 155.2 MB. Free memory was 121.2 MB in the beginning and 119.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 733.90 ms. Allocated memory is still 155.2 MB. Free memory was 119.7 MB in the beginning and 136.7 MB in the end (delta: -17.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 19662.16 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 136.2 MB in the beginning and 156.5 MB in the end (delta: -20.3 MB). Peak memory consumption was 106.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (((((((((i <= l && 1 <= l) && j == 0) && 4294967296 * (l / 4294967296) + 1 <= i) && l / 2 <= 0) && n <= 4294967296 * (n / 4294967296) + 20000001) || (((l <= 4294967296 * ((i + j + -2) / 4294967296) + 20000002 && l <= i + j) && (((4294967296 * (n / 4294967296) + l + 3 <= i + j + n && i + j <= l) && n <= 4294967296 * (n / 4294967296) + 20000001) || ((i + j <= l && 4294967296 * (l / 4294967296) + 2 <= i + j) && n <= 4294967296 * (n / 4294967296) + 20000001))) && 2 <= l)) || ((l <= i + j && (((4294967296 * (n / 4294967296) + l + 3 <= i + j + n && i + j <= l) && n <= 4294967296 * (n / 4294967296) + 20000001) || ((i + j <= l && 4294967296 * (l / 4294967296) + 2 <= i + j) && n <= 4294967296 * (n / 4294967296) + 20000001))) && 4294967296 * (l / 4294967296) + 3 <= i + j)) || (((i == 0 && j == 0) && l == 0) && n <= 4294967296 * (n / 4294967296) + 20000001)) || !(SIZE <= 20000001)) || !(20000001 <= SIZE) - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 16]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 8]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.6s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 10.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 200 SDtfs, 399 SDslu, 674 SDs, 0 SdLazy, 1175 SolverSat, 131 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 5.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 157 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 14 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 45 LocationsWithAnnotation, 111 PreInvPairs, 160 NumberOfFragments, 1112 HoareAnnotationTreeSize, 111 FomulaSimplifications, 11732 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 45 FomulaSimplificationsInter, 2692 FormulaSimplificationTreeSizeReductionInter, 4.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 263 NumberOfCodeBlocks, 263 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 256 ConstructedInterpolants, 0 QuantifiedInterpolants, 81236 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 10/62 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...