/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 12:05:45,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 12:05:45,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 12:05:45,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 12:05:45,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 12:05:45,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 12:05:45,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 12:05:45,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 12:05:45,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 12:05:45,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 12:05:45,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 12:05:45,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 12:05:45,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 12:05:46,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 12:05:46,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 12:05:46,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 12:05:46,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 12:05:46,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 12:05:46,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 12:05:46,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 12:05:46,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 12:05:46,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 12:05:46,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 12:05:46,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 12:05:46,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 12:05:46,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 12:05:46,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 12:05:46,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 12:05:46,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 12:05:46,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 12:05:46,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 12:05:46,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 12:05:46,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 12:05:46,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 12:05:46,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 12:05:46,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 12:05:46,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 12:05:46,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 12:05:46,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 12:05:46,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 12:05:46,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 12:05:46,052 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 12:05:46,074 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 12:05:46,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 12:05:46,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 12:05:46,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 12:05:46,079 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 12:05:46,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 12:05:46,080 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 12:05:46,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 12:05:46,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 12:05:46,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 12:05:46,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 12:05:46,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 12:05:46,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 12:05:46,081 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 12:05:46,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 12:05:46,082 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 12:05:46,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 12:05:46,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 12:05:46,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 12:05:46,083 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 12:05:46,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 12:05:46,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:05:46,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 12:05:46,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 12:05:46,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 12:05:46,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 12:05:46,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:05:46,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 12:05:46,086 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 12:05:46,087 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-21 12:05:46,558 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 12:05:46,581 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 12:05:46,589 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 12:05:46,593 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 12:05:46,594 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 12:05:46,596 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt3.c [2020-07-21 12:05:46,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7849cb58/0d621cba865843d7848aaab968c167c7/FLAGdca90c05b [2020-07-21 12:05:47,728 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 12:05:47,730 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt3.c [2020-07-21 12:05:47,747 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7849cb58/0d621cba865843d7848aaab968c167c7/FLAGdca90c05b [2020-07-21 12:05:48,104 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7849cb58/0d621cba865843d7848aaab968c167c7 [2020-07-21 12:05:48,131 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 12:05:48,138 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 12:05:48,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 12:05:48,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 12:05:48,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 12:05:48,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:05:48" (1/1) ... [2020-07-21 12:05:48,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75229a80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:05:48, skipping insertion in model container [2020-07-21 12:05:48,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:05:48" (1/1) ... [2020-07-21 12:05:48,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 12:05:48,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 12:05:48,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:05:48,475 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 12:05:48,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:05:48,526 INFO L208 MainTranslator]: Completed translation [2020-07-21 12:05:48,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:05:48 WrapperNode [2020-07-21 12:05:48,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 12:05:48,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 12:05:48,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 12:05:48,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 12:05:48,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:05:48" (1/1) ... [2020-07-21 12:05:48,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:05:48" (1/1) ... [2020-07-21 12:05:48,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:05:48" (1/1) ... [2020-07-21 12:05:48,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:05:48" (1/1) ... [2020-07-21 12:05:48,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:05:48" (1/1) ... [2020-07-21 12:05:48,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:05:48" (1/1) ... [2020-07-21 12:05:48,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:05:48" (1/1) ... [2020-07-21 12:05:48,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 12:05:48,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 12:05:48,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 12:05:48,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 12:05:48,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:05:48" (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 [2020-07-21 12:05:48,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 12:05:48,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 12:05:48,794 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 12:05:48,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 12:05:48,795 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 12:05:48,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 12:05:48,795 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 12:05:48,796 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 12:05:48,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 12:05:48,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 12:05:48,796 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 12:05:48,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 12:05:48,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 12:05:49,161 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 12:05:49,162 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 12:05:49,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:05:49 BoogieIcfgContainer [2020-07-21 12:05:49,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 12:05:49,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 12:05:49,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 12:05:49,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 12:05:49,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:05:48" (1/3) ... [2020-07-21 12:05:49,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b74266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:05:49, skipping insertion in model container [2020-07-21 12:05:49,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:05:48" (2/3) ... [2020-07-21 12:05:49,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b74266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:05:49, skipping insertion in model container [2020-07-21 12:05:49,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:05:49" (3/3) ... [2020-07-21 12:05:49,188 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt3.c [2020-07-21 12:05:49,213 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 12:05:49,261 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 12:05:49,322 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 12:05:49,387 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 12:05:49,388 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 12:05:49,388 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 12:05:49,388 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 12:05:49,389 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 12:05:49,389 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 12:05:49,389 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 12:05:49,389 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 12:05:49,431 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-07-21 12:05:49,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 12:05:49,445 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:05:49,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:05:49,448 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:05:49,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:05:49,464 INFO L82 PathProgramCache]: Analyzing trace with hash -320041890, now seen corresponding path program 1 times [2020-07-21 12:05:49,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:05:49,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541562274] [2020-07-21 12:05:49,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:05:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:05:49,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 12:05:49,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:05:49,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:05:49,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:05:49,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541562274] [2020-07-21 12:05:49,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:05:49,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 12:05:49,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655288852] [2020-07-21 12:05:49,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 12:05:49,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:05:49,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 12:05:49,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 12:05:49,665 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-07-21 12:05:49,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:05:49,705 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-07-21 12:05:49,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 12:05:49,707 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-21 12:05:49,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:05:49,718 INFO L225 Difference]: With dead ends: 35 [2020-07-21 12:05:49,719 INFO L226 Difference]: Without dead ends: 16 [2020-07-21 12:05:49,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 12:05:49,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-07-21 12:05:49,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-07-21 12:05:49,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-21 12:05:49,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-07-21 12:05:49,782 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2020-07-21 12:05:49,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:05:49,783 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-07-21 12:05:49,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 12:05:49,783 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-07-21 12:05:49,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 12:05:49,784 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:05:49,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:05:49,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:05:49,987 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:05:49,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:05:49,989 INFO L82 PathProgramCache]: Analyzing trace with hash -334818226, now seen corresponding path program 1 times [2020-07-21 12:05:49,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:05:49,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166301555] [2020-07-21 12:05:49,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:05:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:05:50,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 12:05:50,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:05:50,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:05:50,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:05:50,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166301555] [2020-07-21 12:05:50,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:05:50,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 12:05:50,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172289716] [2020-07-21 12:05:50,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 12:05:50,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:05:50,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 12:05:50,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 12:05:50,179 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2020-07-21 12:05:50,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:05:50,368 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2020-07-21 12:05:50,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 12:05:50,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-21 12:05:50,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:05:50,382 INFO L225 Difference]: With dead ends: 30 [2020-07-21 12:05:50,383 INFO L226 Difference]: Without dead ends: 18 [2020-07-21 12:05:50,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:05:50,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-21 12:05:50,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-21 12:05:50,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-21 12:05:50,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-07-21 12:05:50,397 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2020-07-21 12:05:50,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:05:50,398 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-07-21 12:05:50,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 12:05:50,398 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-07-21 12:05:50,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 12:05:50,400 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:05:50,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:05:50,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:05:50,608 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:05:50,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:05:50,611 INFO L82 PathProgramCache]: Analyzing trace with hash -135124987, now seen corresponding path program 1 times [2020-07-21 12:05:50,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:05:50,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8885166] [2020-07-21 12:05:50,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:05:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:05:50,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2020-07-21 12:05:50,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:05:50,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:05:50,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 12:05:51,054 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:05:53,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:05:53,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8885166] [2020-07-21 12:05:53,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 12:05:53,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-07-21 12:05:53,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845548500] [2020-07-21 12:05:53,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 12:05:53,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:05:53,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 12:05:53,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=134, Unknown=1, NotChecked=0, Total=182 [2020-07-21 12:05:53,569 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 14 states. [2020-07-21 12:05:56,153 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 33 DAG size of output: 10 [2020-07-21 12:06:00,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:06:00,458 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2020-07-21 12:06:00,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 12:06:00,460 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-07-21 12:06:00,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:06:00,461 INFO L225 Difference]: With dead ends: 37 [2020-07-21 12:06:00,461 INFO L226 Difference]: Without dead ends: 24 [2020-07-21 12:06:00,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=61, Invalid=178, Unknown=1, NotChecked=0, Total=240 [2020-07-21 12:06:00,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-21 12:06:00,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-07-21 12:06:00,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-21 12:06:00,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-07-21 12:06:00,489 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 15 [2020-07-21 12:06:00,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:06:00,490 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-07-21 12:06:00,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 12:06:00,491 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-07-21 12:06:00,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 12:06:00,494 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:06:00,495 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:06:00,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:06:00,712 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:06:00,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:06:00,714 INFO L82 PathProgramCache]: Analyzing trace with hash 498025845, now seen corresponding path program 1 times [2020-07-21 12:06:00,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:06:00,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044279275] [2020-07-21 12:06:00,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:06:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:06:00,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-21 12:06:00,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:06:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:06:01,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 12:06:01,307 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:06:04,314 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 (= 0 (mod (mod c_main_~l~0 4294967296) 3))) (.cse1 (mod c_main_~l~0 4294967296)) (.cse0 (+ c_main_~l~0 2))) (or (= (mod .cse0 4294967296) (mod (+ c_main_~j~0 c_main_~k~0 c_main_~i~0 2) 4294967296)) (and (< .cse1 0) (= 0 (mod (+ (mod (mod c_main_~l~0 4294967296) 3) 4294967293) 4294967296)) (not .cse2)) (and (or .cse2 (<= 0 .cse1)) (= 0 (mod (mod (mod c_main_~l~0 4294967296) 3) 4294967296))) (< (mod .cse0 4294967296) (mod c_main_~n~0 4294967296)))) is different from true [2020-07-21 12:06:06,420 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse7 (mod c_main_~l~0 4294967296))) (let ((.cse4 (= 0 (mod (+ (mod (mod c_main_~l~0 4294967296) 3) 4294967293) 4294967296))) (.cse1 (= 0 (mod (mod (mod c_main_~l~0 4294967296) 3) 4294967296))) (.cse0 (= (mod (+ c_main_~l~0 2) 4294967296) (mod (+ c_main_~j~0 c_main_~k~0 c_main_~i~0 2) 4294967296))) (.cse5 (= 0 (mod (mod c_main_~l~0 4294967296) 3))) (.cse2 (< .cse7 0)) (.cse6 (<= 0 .cse7)) (.cse3 (forall ((main_~n~0 Int)) (or (<= (mod main_~n~0 4294967296) (mod c_main_~l~0 4294967296)) (< (mod (+ c_main_~l~0 2) 4294967296) (mod main_~n~0 4294967296)))))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse0 .cse1 .cse4 .cse3) (or .cse0 .cse5 .cse4 .cse6 .cse3) (or .cse0 .cse1 .cse3 (not .cse5)) (or .cse0 .cse5 .cse2 .cse6 .cse3)))) is different from false [2020-07-21 12:06:08,547 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse6 (+ c_main_~l~0 1))) (let ((.cse7 (mod .cse6 4294967296))) (let ((.cse1 (< .cse7 0)) (.cse2 (= 0 (mod (mod .cse6 4294967296) 3))) (.cse3 (<= 0 .cse7)) (.cse4 (= 0 (mod (mod (mod .cse6 4294967296) 3) 4294967296))) (.cse0 (= (mod (+ c_main_~l~0 3) 4294967296) (mod (+ c_main_~j~0 c_main_~k~0 c_main_~i~0 2) 4294967296))) (.cse5 (= (mod (+ (mod (mod .cse6 4294967296) 3) 4294967293) 4294967296) 0))) (and (or .cse0 .cse1 .cse2 .cse3 (forall ((v_prenex_3 Int)) (or (< (mod (+ c_main_~l~0 3) 4294967296) (mod v_prenex_3 4294967296)) (<= (mod v_prenex_3 4294967296) (mod (+ c_main_~l~0 1) 4294967296))))) (or (forall ((main_~n~0 Int)) (or (<= (mod main_~n~0 4294967296) (mod (+ c_main_~l~0 1) 4294967296)) (< (mod (+ c_main_~l~0 3) 4294967296) (mod main_~n~0 4294967296)))) .cse4 .cse0 .cse1) (or (forall ((v_prenex_1 Int)) (or (< (mod (+ c_main_~l~0 3) 4294967296) (mod v_prenex_1 4294967296)) (<= (mod v_prenex_1 4294967296) (mod (+ c_main_~l~0 1) 4294967296)))) .cse4 .cse0 (not .cse2)) (or (forall ((v_prenex_2 Int)) (or (< (mod (+ c_main_~l~0 3) 4294967296) (mod v_prenex_2 4294967296)) (<= (mod v_prenex_2 4294967296) (mod (+ c_main_~l~0 1) 4294967296)))) .cse0 .cse2 .cse3 .cse5) (or (forall ((v_prenex_4 Int)) (or (< (mod (+ c_main_~l~0 3) 4294967296) (mod v_prenex_4 4294967296)) (<= (mod v_prenex_4 4294967296) (mod (+ c_main_~l~0 1) 4294967296)))) .cse4 .cse0 .cse5))))) is different from false [2020-07-21 12:06:37,958 WARN L193 SmtUtils]: Spent 10.56 s on a formula simplification. DAG size of input: 85 DAG size of output: 35 [2020-07-21 12:06:37,992 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2020-07-21 12:06:37,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044279275] [2020-07-21 12:06:37,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 12:06:37,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 23 [2020-07-21 12:06:37,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623973944] [2020-07-21 12:06:37,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-21 12:06:37,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:06:38,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-21 12:06:38,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=295, Unknown=11, NotChecked=114, Total=506 [2020-07-21 12:06:38,005 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 23 states. [2020-07-21 12:06:53,129 WARN L193 SmtUtils]: Spent 10.50 s on a formula simplification that was a NOOP. DAG size: 61 [2020-07-21 12:07:03,849 WARN L838 $PredicateComparison]: unable to prove that (and (= (mod (+ c_main_~j~0 c_main_~k~0 c_main_~i~0) 4294967296) (mod c_main_~l~0 4294967296)) (or (= (mod (+ c_main_~l~0 3) 4294967296) (mod (+ c_main_~j~0 c_main_~k~0 c_main_~i~0 3) 4294967296)) (= 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 3) 4294967296)) (forall ((v_prenex_4 Int)) (or (< (mod (+ c_main_~l~0 3) 4294967296) (mod v_prenex_4 4294967296)) (<= (mod v_prenex_4 4294967296) (mod (+ c_main_~l~0 1) 4294967296)))))) is different from false [2020-07-21 12:07:39,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:07:39,397 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-07-21 12:07:39,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-21 12:07:39,398 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 22 [2020-07-21 12:07:39,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:07:39,400 INFO L225 Difference]: With dead ends: 45 [2020-07-21 12:07:39,400 INFO L226 Difference]: Without dead ends: 32 [2020-07-21 12:07:39,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 19 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 58.3s TimeCoverageRelationStatistics Valid=108, Invalid=399, Unknown=15, NotChecked=180, Total=702 [2020-07-21 12:07:39,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-21 12:07:39,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-07-21 12:07:39,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-21 12:07:39,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-07-21 12:07:39,412 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 22 [2020-07-21 12:07:39,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:07:39,412 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-07-21 12:07:39,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-21 12:07:39,413 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-07-21 12:07:39,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-21 12:07:39,414 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:07:39,414 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:07:39,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:07:39,632 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:07:39,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:07:39,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1031065109, now seen corresponding path program 1 times [2020-07-21 12:07:39,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:07:39,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351730437] [2020-07-21 12:07:39,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:07:39,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:07:39,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 33 conjunts are in the unsatisfiable core [2020-07-21 12:07:39,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:07:40,195 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:07:40,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 12:07:40,258 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:08:11,454 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 35 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:08:11,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351730437] [2020-07-21 12:08:11,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 12:08:11,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2020-07-21 12:08:11,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166365808] [2020-07-21 12:08:11,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-07-21 12:08:11,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:08:11,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-07-21 12:08:11,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=704, Unknown=14, NotChecked=0, Total=870 [2020-07-21 12:08:11,459 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 30 states. [2020-07-21 12:08:46,511 WARN L193 SmtUtils]: Spent 33.05 s on a formula simplification. DAG size of input: 97 DAG size of output: 41 [2020-07-21 12:09:18,066 WARN L193 SmtUtils]: Spent 24.19 s on a formula simplification. DAG size of input: 89 DAG size of output: 21 [2020-07-21 12:10:31,332 WARN L193 SmtUtils]: Spent 1.13 m on a formula simplification. DAG size of input: 81 DAG size of output: 42 [2020-07-21 12:11:04,739 WARN L193 SmtUtils]: Spent 18.68 s on a formula simplification. DAG size of input: 64 DAG size of output: 12 [2020-07-21 12:11:27,458 WARN L193 SmtUtils]: Spent 8.28 s on a formula simplification that was a NOOP. DAG size: 39 [2020-07-21 12:12:06,780 WARN L193 SmtUtils]: Spent 8.28 s on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 12:12:44,623 WARN L193 SmtUtils]: Spent 14.66 s on a formula simplification. DAG size of input: 63 DAG size of output: 38 [2020-07-21 12:14:09,701 WARN L193 SmtUtils]: Spent 33.57 s on a formula simplification. DAG size of input: 78 DAG size of output: 12 [2020-07-21 12:15:10,630 WARN L193 SmtUtils]: Spent 49.68 s on a formula simplification. DAG size of input: 58 DAG size of output: 23 [2020-07-21 12:15:39,701 WARN L193 SmtUtils]: Spent 4.17 s on a formula simplification that was a NOOP. DAG size: 39 [2020-07-21 12:16:47,589 WARN L193 SmtUtils]: Spent 24.00 s on a formula simplification. DAG size of input: 90 DAG size of output: 13 [2020-07-21 12:17:59,869 WARN L193 SmtUtils]: Spent 21.42 s on a formula simplification. DAG size of input: 75 DAG size of output: 23 [2020-07-21 12:18:58,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:18:58,052 INFO L93 Difference]: Finished difference Result 78 states and 103 transitions. [2020-07-21 12:18:58,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-07-21 12:18:58,053 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 29 [2020-07-21 12:18:58,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:18:58,055 INFO L225 Difference]: With dead ends: 78 [2020-07-21 12:18:58,055 INFO L226 Difference]: Without dead ends: 61 [2020-07-21 12:18:58,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 515.7s TimeCoverageRelationStatistics Valid=330, Invalid=1407, Unknown=69, NotChecked=0, Total=1806 [2020-07-21 12:18:58,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-21 12:18:58,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2020-07-21 12:18:58,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-07-21 12:18:58,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 65 transitions. [2020-07-21 12:18:58,066 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 65 transitions. Word has length 29 [2020-07-21 12:18:58,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:18:58,067 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 65 transitions. [2020-07-21 12:18:58,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-07-21 12:18:58,067 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 65 transitions. [2020-07-21 12:18:58,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-21 12:18:58,068 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:18:58,068 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:18:58,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:18:58,275 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:18:58,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:18:58,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1979447404, now seen corresponding path program 2 times [2020-07-21 12:18:58,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:18:58,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444504404] [2020-07-21 12:18:58,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:18:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:18:58,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2020-07-21 12:18:58,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:18:58,803 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:18:58,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 12:18:58,872 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:19:01,183 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_main_~l~0 1)) (.cse0 (mod c_main_~l~0 4294967296)) (.cse1 (= 0 (mod (mod c_main_~l~0 4294967296) 3)))) (or (and (< .cse0 0) (= 0 (mod (+ (mod (mod c_main_~l~0 4294967296) 3) 4294967293) 4294967296)) (not .cse1)) (= (mod .cse2 4294967296) (mod (+ c_main_~j~0 c_main_~k~0 c_main_~i~0 1) 4294967296)) (< (mod .cse2 4294967296) (mod c_main_~n~0 4294967296)) (and (= 0 (mod (mod (mod c_main_~l~0 4294967296) 3) 4294967296)) (or (<= 0 .cse0) .cse1)))) is different from true [2020-07-21 12:19:03,286 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse7 (mod c_main_~l~0 4294967296))) (let ((.cse4 (<= 0 .cse7)) (.cse2 (< .cse7 0)) (.cse6 (= 0 (mod (+ (mod (mod c_main_~l~0 4294967296) 3) 4294967293) 4294967296))) (.cse0 (forall ((main_~n~0 Int)) (or (<= (mod main_~n~0 4294967296) (mod c_main_~l~0 4294967296)) (< (mod (+ c_main_~l~0 1) 4294967296) (mod main_~n~0 4294967296))))) (.cse1 (= (mod (+ c_main_~l~0 1) 4294967296) (mod (+ c_main_~j~0 c_main_~k~0 c_main_~i~0 1) 4294967296))) (.cse3 (= 0 (mod (mod (mod c_main_~l~0 4294967296) 3) 4294967296))) (.cse5 (= 0 (mod (mod c_main_~l~0 4294967296) 3)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse0 .cse1 .cse5 .cse6) (or .cse4 .cse0 .cse1 .cse2 .cse5) (or .cse0 .cse1 .cse3 .cse6) (or .cse0 .cse1 .cse3 (not .cse5))))) is different from false [2020-07-21 12:19:05,372 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse6 (+ c_main_~l~0 1))) (let ((.cse7 (mod .cse6 4294967296))) (let ((.cse1 (= 0 (mod (+ (mod (mod .cse6 4294967296) 3) 4294967293) 4294967296))) (.cse5 (< .cse7 0)) (.cse4 (<= 0 .cse7)) (.cse3 (= 0 (mod (mod .cse6 4294967296) 3))) (.cse0 (= 0 (mod (mod (mod .cse6 4294967296) 3) 4294967296))) (.cse2 (= (mod (+ c_main_~j~0 c_main_~k~0 c_main_~i~0 1) 4294967296) (mod (+ c_main_~l~0 2) 4294967296)))) (and (or (forall ((v_prenex_8 Int)) (or (<= (mod v_prenex_8 4294967296) (mod (+ c_main_~l~0 1) 4294967296)) (< (mod (+ c_main_~l~0 2) 4294967296) (mod v_prenex_8 4294967296)))) .cse0 .cse1 .cse2) (or .cse3 .cse4 (forall ((main_~n~0 Int)) (or (< (mod (+ c_main_~l~0 2) 4294967296) (mod main_~n~0 4294967296)) (<= (mod main_~n~0 4294967296) (mod (+ c_main_~l~0 1) 4294967296)))) .cse1 .cse2) (or .cse5 .cse0 (forall ((v_prenex_6 Int)) (or (< (mod (+ c_main_~l~0 2) 4294967296) (mod v_prenex_6 4294967296)) (<= (mod v_prenex_6 4294967296) (mod (+ c_main_~l~0 1) 4294967296)))) .cse2) (or .cse5 .cse3 .cse4 (forall ((v_prenex_5 Int)) (or (<= (mod v_prenex_5 4294967296) (mod (+ c_main_~l~0 1) 4294967296)) (< (mod (+ c_main_~l~0 2) 4294967296) (mod v_prenex_5 4294967296)))) .cse2) (or (not .cse3) .cse0 .cse2 (forall ((v_prenex_7 Int)) (or (< (mod (+ c_main_~l~0 2) 4294967296) (mod v_prenex_7 4294967296)) (<= (mod v_prenex_7 4294967296) (mod (+ c_main_~l~0 1) 4294967296))))))))) is different from false [2020-07-21 12:19:22,102 WARN L193 SmtUtils]: Spent 6.26 s on a formula simplification. DAG size of input: 86 DAG size of output: 36 [2020-07-21 12:19:28,440 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 35 [2020-07-21 12:19:40,938 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 35 [2020-07-21 12:19:51,383 WARN L193 SmtUtils]: Spent 4.15 s on a formula simplification that was a NOOP. DAG size: 35 [2020-07-21 12:20:08,015 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 35 [2020-07-21 12:20:22,627 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 36