/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:29:06,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:29:06,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:29:06,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:29:06,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:29:06,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:29:06,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:29:06,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:29:06,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:29:06,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:29:06,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:29:06,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:29:06,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:29:06,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:29:06,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:29:06,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:29:06,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:29:06,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:29:06,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:29:06,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:29:06,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:29:06,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:29:06,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:29:06,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:29:06,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 16:29:06,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:29:06,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:29:06,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:29:06,157 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 [2021-02-21 16:29:06,213 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:29:06,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:29:06,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:29:06,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:29:06,217 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:29:06,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:29:06,217 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:29:06,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:29:06,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:29:06,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:29:06,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:29:06,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:29:06,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:29:06,219 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:29:06,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:29:06,220 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:29:06,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:29:06,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:29:06,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:29:06,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:29:06,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:29:06,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:29:06,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:29:06,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:29:06,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:29:06,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:29:06,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:29:06,223 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:29:06,223 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:29:06,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:29:06,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:29:06,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:29:06,677 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:29:06,679 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:29:06,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+lhb-reducer.c [2021-02-21 16:29:06,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9c4ad3d0/520f7acd28024763b3e1c8eef7e1c9a9/FLAGe368e5532 [2021-02-21 16:29:07,309 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:29:07,310 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+lhb-reducer.c [2021-02-21 16:29:07,321 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9c4ad3d0/520f7acd28024763b3e1c8eef7e1c9a9/FLAGe368e5532 [2021-02-21 16:29:07,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9c4ad3d0/520f7acd28024763b3e1c8eef7e1c9a9 [2021-02-21 16:29:07,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:29:07,692 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:29:07,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:29:07,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:29:07,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:29:07,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:29:07" (1/1) ... [2021-02-21 16:29:07,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f4160e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:29:07, skipping insertion in model container [2021-02-21 16:29:07,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:29:07" (1/1) ... [2021-02-21 16:29:07,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:29:07,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:29:07,923 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+lhb-reducer.c[2239,2252] [2021-02-21 16:29:07,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:29:07,943 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:29:07,966 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+lhb-reducer.c[2239,2252] [2021-02-21 16:29:07,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:29:07,987 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:29:07,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:29:07 WrapperNode [2021-02-21 16:29:07,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:29:07,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:29:07,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:29:07,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:29:08,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:29:07" (1/1) ... [2021-02-21 16:29:08,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:29:07" (1/1) ... [2021-02-21 16:29:08,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:29:07" (1/1) ... [2021-02-21 16:29:08,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:29:07" (1/1) ... [2021-02-21 16:29:08,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:29:07" (1/1) ... [2021-02-21 16:29:08,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:29:07" (1/1) ... [2021-02-21 16:29:08,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:29:07" (1/1) ... [2021-02-21 16:29:08,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:29:08,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:29:08,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:29:08,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:29:08,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:29:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:29:08,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:29:08,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:29:08,143 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:29:08,143 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:29:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:29:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:29:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:29:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:29:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 16:29:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 16:29:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:29:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:29:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:29:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:29:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:29:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:29:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:29:08,563 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:29:08,563 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-21 16:29:08,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:29:08 BoogieIcfgContainer [2021-02-21 16:29:08,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:29:08,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:29:08,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:29:08,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:29:08,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:29:07" (1/3) ... [2021-02-21 16:29:08,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd4a2d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:29:08, skipping insertion in model container [2021-02-21 16:29:08,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:29:07" (2/3) ... [2021-02-21 16:29:08,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd4a2d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:29:08, skipping insertion in model container [2021-02-21 16:29:08,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:29:08" (3/3) ... [2021-02-21 16:29:08,574 INFO L111 eAbstractionObserver]: Analyzing ICFG mod3.c.v+lhb-reducer.c [2021-02-21 16:29:08,581 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:29:08,586 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:29:08,610 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:29:08,637 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:29:08,637 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:29:08,637 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:29:08,637 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:29:08,638 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:29:08,638 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:29:08,638 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:29:08,638 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:29:08,664 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2021-02-21 16:29:08,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-02-21 16:29:08,681 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:29:08,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:29:08,682 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:29:08,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:29:08,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1261463571, now seen corresponding path program 1 times [2021-02-21 16:29:08,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:29:08,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18508628] [2021-02-21 16:29:08,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:29:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:29:09,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:09,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:09,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:09,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 155 [2021-02-21 16:29:09,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:09,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:29:09,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:09,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:09,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:29:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:29:09,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:09,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:09,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:29:09,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18508628] [2021-02-21 16:29:09,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:29:09,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:29:09,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021617173] [2021-02-21 16:29:09,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:29:09,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:29:09,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:29:09,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:29:09,323 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2021-02-21 16:29:09,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:29:09,976 INFO L93 Difference]: Finished difference Result 59 states and 81 transitions. [2021-02-21 16:29:09,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 16:29:09,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-02-21 16:29:09,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:29:09,985 INFO L225 Difference]: With dead ends: 59 [2021-02-21 16:29:09,986 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 16:29:09,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:29:10,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 16:29:10,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 16:29:10,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 16:29:10,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 16:29:10,016 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-02-21 16:29:10,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:29:10,017 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 16:29:10,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:29:10,017 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 16:29:10,017 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 16:29:10,018 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:29:10,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 16:29:10,182 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-02-21 16:29:10,182 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-02-21 16:29:10,182 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-02-21 16:29:10,183 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-21 16:29:10,183 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= ~__tmp_91_0~0 |old(~__tmp_91_0~0)|) (= ~__return_121~0 |old(~__return_121~0)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= ~__tmp_88_0~0 |old(~__tmp_88_0~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= ~__tmp_112_0~0 |old(~__tmp_112_0~0)|) (= ~__tmp_94_0~0 |old(~__tmp_94_0~0)|) (= |old(#valid)| |#valid|) (= ~__tmp_88_1~0 |old(~__tmp_88_1~0)|) (= ~__tmp_91_1~0 |old(~__tmp_91_1~0)|) (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= ~__tmp_93_0~0 |old(~__tmp_93_0~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2021-02-21 16:29:10,183 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-21 16:29:10,184 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-21 16:29:10,184 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 16:29:10,184 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 16:29:10,184 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-21 16:29:10,184 INFO L189 CegarLoopUtils]: For program point L97(lines 97 106) no Hoare annotation was computed. [2021-02-21 16:29:10,185 INFO L185 CegarLoopUtils]: At program point L122(lines 25 145) the Hoare annotation is: (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296))))))) [2021-02-21 16:29:10,185 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 16 151) no Hoare annotation was computed. [2021-02-21 16:29:10,185 INFO L185 CegarLoopUtils]: At program point L56(lines 26 114) the Hoare annotation is: (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296))))))) [2021-02-21 16:29:10,185 INFO L189 CegarLoopUtils]: For program point L23(lines 23 150) no Hoare annotation was computed. [2021-02-21 16:29:10,186 INFO L189 CegarLoopUtils]: For program point L48(lines 48 85) no Hoare annotation was computed. [2021-02-21 16:29:10,186 INFO L185 CegarLoopUtils]: At program point L44(lines 26 114) the Hoare annotation is: (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296))))))) [2021-02-21 16:29:10,186 INFO L189 CegarLoopUtils]: For program point L90(lines 90 112) no Hoare annotation was computed. [2021-02-21 16:29:10,186 INFO L189 CegarLoopUtils]: For program point L37(lines 37 113) no Hoare annotation was computed. [2021-02-21 16:29:10,187 INFO L189 CegarLoopUtils]: For program point L99(line 99) no Hoare annotation was computed. [2021-02-21 16:29:10,187 INFO L189 CegarLoopUtils]: For program point L128(lines 128 143) no Hoare annotation was computed. [2021-02-21 16:29:10,187 INFO L189 CegarLoopUtils]: For program point L62(lines 62 84) no Hoare annotation was computed. [2021-02-21 16:29:10,187 INFO L189 CegarLoopUtils]: For program point L25(lines 25 145) no Hoare annotation was computed. [2021-02-21 16:29:10,187 INFO L192 CegarLoopUtils]: At program point L83(lines 17 151) the Hoare annotation is: true [2021-02-21 16:29:10,188 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 16 151) no Hoare annotation was computed. [2021-02-21 16:29:10,188 INFO L189 CegarLoopUtils]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 99) no Hoare annotation was computed. [2021-02-21 16:29:10,188 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 16 151) the Hoare annotation is: (and (= ~__tmp_88_1~0 |old(~__tmp_88_1~0)|) (= |old(~__tmp_112_0~0)| ~__tmp_112_0~0) (= ~__tmp_91_1~0 |old(~__tmp_91_1~0)|) (= ~__tmp_91_0~0 |old(~__tmp_91_0~0)|) (= |old(~__return_121~0)| ~__return_121~0) (= ~__tmp_88_0~0 |old(~__tmp_88_0~0)|) (= ~__tmp_93_0~0 |old(~__tmp_93_0~0)|) (= ~__tmp_94_0~0 |old(~__tmp_94_0~0)|)) [2021-02-21 16:29:10,188 INFO L189 CegarLoopUtils]: For program point L117(lines 117 144) no Hoare annotation was computed. [2021-02-21 16:29:10,189 INFO L192 CegarLoopUtils]: At program point L142(lines 25 145) the Hoare annotation is: true [2021-02-21 16:29:10,189 INFO L189 CegarLoopUtils]: For program point L39(lines 39 86) no Hoare annotation was computed. [2021-02-21 16:29:10,189 INFO L192 CegarLoopUtils]: At program point L134(lines 25 145) the Hoare annotation is: true [2021-02-21 16:29:10,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:29:10 BoogieIcfgContainer [2021-02-21 16:29:10,210 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:29:10,212 INFO L168 Benchmark]: Toolchain (without parser) took 2533.68 ms. Allocated memory is still 159.4 MB. Free memory was 135.2 MB in the beginning and 59.8 MB in the end (delta: 75.4 MB). Peak memory consumption was 75.5 MB. Max. memory is 8.0 GB. [2021-02-21 16:29:10,213 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 159.4 MB. Free memory is still 131.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:29:10,214 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.59 ms. Allocated memory is still 159.4 MB. Free memory was 134.2 MB in the beginning and 123.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 16:29:10,215 INFO L168 Benchmark]: Boogie Preprocessor took 35.86 ms. Allocated memory is still 159.4 MB. Free memory was 123.7 MB in the beginning and 122.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:29:10,216 INFO L168 Benchmark]: RCFGBuilder took 539.21 ms. Allocated memory is still 159.4 MB. Free memory was 122.2 MB in the beginning and 138.5 MB in the end (delta: -16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-21 16:29:10,219 INFO L168 Benchmark]: TraceAbstraction took 1643.76 ms. Allocated memory is still 159.4 MB. Free memory was 138.0 MB in the beginning and 59.8 MB in the end (delta: 78.1 MB). Peak memory consumption was 77.6 MB. Max. memory is 8.0 GB. [2021-02-21 16:29:10,229 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 159.4 MB. Free memory is still 131.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 287.59 ms. Allocated memory is still 159.4 MB. Free memory was 134.2 MB in the beginning and 123.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.86 ms. Allocated memory is still 159.4 MB. Free memory was 123.7 MB in the beginning and 122.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 539.21 ms. Allocated memory is still 159.4 MB. Free memory was 122.2 MB in the beginning and 138.5 MB in the end (delta: -16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1643.76 ms. Allocated memory is still 159.4 MB. Free memory was 138.0 MB in the beginning and 59.8 MB in the end (delta: 78.1 MB). Peak memory consumption was 77.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 99]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: main__x <= 4294967296 * (main__x / 4294967296) + 3 * ((main__x / 4294967296 * -4294967296 + main__x) / 3) + 4294967296 * ((main__x / 4294967296 * -4294967296 + (main__x / 4294967296 * -4294967296 + main__x) / 3 * -3 + main__x) / 4294967296) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: main__x <= 4294967296 * (main__x / 4294967296) + 3 * ((main__x / 4294967296 * -4294967296 + main__x) / 3) + 4294967296 * ((main__x / 4294967296 * -4294967296 + (main__x / 4294967296 * -4294967296 + main__x) / 3 * -3 + main__x) / 4294967296) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: main__x <= 4294967296 * (main__x / 4294967296) + 3 * ((main__x / 4294967296 * -4294967296 + main__x) / 3) + 4294967296 * ((main__x / 4294967296 * -4294967296 + (main__x / 4294967296 * -4294967296 + main__x) / 3 * -3 + main__x) / 4294967296) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 17 SDslu, 32 SDs, 0 SdLazy, 63 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 17 NumberOfFragments, 211 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 33 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 3276 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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...