/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/nla-digbench/lcm2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 00:49:21,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 00:49:21,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 00:49:21,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-16 00:49:21,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 00:49:21,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 00:49:21,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 00:49:21,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 00:49:21,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 00:49:21,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 00:49:21,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 00:49:21,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 00:49:21,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 00:49:21,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 00:49:21,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 00:49:21,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 00:49:21,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-16 00:49:21,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 00:49:21,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 00:49:21,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 00:49:21,626 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 [2021-04-16 00:49:21,650 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 00:49:21,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 00:49:21,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-16 00:49:21,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-16 00:49:21,652 INFO L138 SettingsManager]: * Use SBE=true [2021-04-16 00:49:21,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 00:49:21,652 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 00:49:21,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 00:49:21,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 00:49:21,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 00:49:21,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 00:49:21,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 00:49:21,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 00:49:21,652 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 00:49:21,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 00:49:21,653 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 00:49:21,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 00:49:21,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 00:49:21,653 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 00:49:21,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 00:49:21,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 00:49:21,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 00:49:21,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-16 00:49:21,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-16 00:49:21,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-16 00:49:21,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-16 00:49:21,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-16 00:49:21,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-04-16 00:49:21,654 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 00:49:21,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 00:49:21,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 00:49:21,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 00:49:21,904 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 00:49:21,905 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 00:49:21,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/lcm2.c [2021-04-16 00:49:21,962 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3e78be12/b1fa9588dcbc49bfae983749e6377d0c/FLAG01e51cd92 [2021-04-16 00:49:22,332 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 00:49:22,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/lcm2.c [2021-04-16 00:49:22,339 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3e78be12/b1fa9588dcbc49bfae983749e6377d0c/FLAG01e51cd92 [2021-04-16 00:49:22,354 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3e78be12/b1fa9588dcbc49bfae983749e6377d0c [2021-04-16 00:49:22,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 00:49:22,358 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-16 00:49:22,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 00:49:22,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 00:49:22,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 00:49:22,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 12:49:22" (1/1) ... [2021-04-16 00:49:22,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43ce0c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:49:22, skipping insertion in model container [2021-04-16 00:49:22,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 12:49:22" (1/1) ... [2021-04-16 00:49:22,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 00:49:22,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 00:49:22,472 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/lcm2.c[545,558] [2021-04-16 00:49:22,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 00:49:22,492 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 00:49:22,500 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/lcm2.c[545,558] [2021-04-16 00:49:22,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 00:49:22,522 INFO L208 MainTranslator]: Completed translation [2021-04-16 00:49:22,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:49:22 WrapperNode [2021-04-16 00:49:22,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 00:49:22,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 00:49:22,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 00:49:22,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 00:49:22,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:49:22" (1/1) ... [2021-04-16 00:49:22,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:49:22" (1/1) ... [2021-04-16 00:49:22,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:49:22" (1/1) ... [2021-04-16 00:49:22,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:49:22" (1/1) ... [2021-04-16 00:49:22,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:49:22" (1/1) ... [2021-04-16 00:49:22,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:49:22" (1/1) ... [2021-04-16 00:49:22,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:49:22" (1/1) ... [2021-04-16 00:49:22,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 00:49:22,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 00:49:22,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 00:49:22,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 00:49:22,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:49:22" (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 [2021-04-16 00:49:22,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 00:49:22,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 00:49:22,650 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 00:49:22,650 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-04-16 00:49:22,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-04-16 00:49:22,651 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 00:49:22,651 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-16 00:49:22,651 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 00:49:22,651 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 00:49:22,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 00:49:22,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-04-16 00:49:22,652 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-04-16 00:49:22,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 00:49:22,652 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 00:49:22,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 00:49:22,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 00:49:22,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 00:49:22,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 00:49:22,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 00:49:22,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 00:49:22,835 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 00:49:22,835 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-04-16 00:49:22,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 12:49:22 BoogieIcfgContainer [2021-04-16 00:49:22,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 00:49:22,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 00:49:22,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 00:49:22,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 00:49:22,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 12:49:22" (1/3) ... [2021-04-16 00:49:22,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e365be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 12:49:22, skipping insertion in model container [2021-04-16 00:49:22,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:49:22" (2/3) ... [2021-04-16 00:49:22,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e365be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 12:49:22, skipping insertion in model container [2021-04-16 00:49:22,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 12:49:22" (3/3) ... [2021-04-16 00:49:22,854 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm2.c [2021-04-16 00:49:22,858 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-16 00:49:22,861 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 00:49:22,871 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 00:49:22,898 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 00:49:22,898 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-16 00:49:22,898 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-16 00:49:22,898 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 00:49:22,898 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 00:49:22,898 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 00:49:22,898 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 00:49:22,898 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 00:49:22,910 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-04-16 00:49:22,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-04-16 00:49:22,913 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 00:49:22,914 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 00:49:22,914 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 00:49:22,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 00:49:22,919 INFO L82 PathProgramCache]: Analyzing trace with hash 656971502, now seen corresponding path program 1 times [2021-04-16 00:49:22,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 00:49:22,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152947082] [2021-04-16 00:49:22,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 00:49:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 00:49:23,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 00:49:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 00:49:23,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-04-16 00:49:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 00:49:23,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-04-16 00:49:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 00:49:23,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-04-16 00:49:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 00:49:23,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-04-16 00:49:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 00:49:23,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,183 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-04-16 00:49:23,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152947082] [2021-04-16 00:49:23,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 00:49:23,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-16 00:49:23,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414212246] [2021-04-16 00:49:23,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-16 00:49:23,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-16 00:49:23,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-16 00:49:23,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 00:49:23,201 INFO L87 Difference]: Start difference. First operand has 31 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-04-16 00:49:23,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 00:49:23,295 INFO L93 Difference]: Finished difference Result 55 states and 78 transitions. [2021-04-16 00:49:23,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-16 00:49:23,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2021-04-16 00:49:23,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 00:49:23,301 INFO L225 Difference]: With dead ends: 55 [2021-04-16 00:49:23,302 INFO L226 Difference]: Without dead ends: 26 [2021-04-16 00:49:23,304 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 00:49:23,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-04-16 00:49:23,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-04-16 00:49:23,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-04-16 00:49:23,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2021-04-16 00:49:23,341 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 32 [2021-04-16 00:49:23,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 00:49:23,342 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2021-04-16 00:49:23,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-04-16 00:49:23,343 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2021-04-16 00:49:23,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-04-16 00:49:23,344 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 00:49:23,344 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 00:49:23,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 00:49:23,344 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 00:49:23,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 00:49:23,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1510033502, now seen corresponding path program 1 times [2021-04-16 00:49:23,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 00:49:23,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860558379] [2021-04-16 00:49:23,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 00:49:23,375 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-04-16 00:49:23,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2052580457] [2021-04-16 00:49:23,376 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 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-16 00:49:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 00:49:23,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 19 conjunts are in the unsatisfiable core [2021-04-16 00:49:23,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-16 00:49:23,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:49:23,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:49:23,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:49:23,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:49:23,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-04-16 00:49:23,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 00:49:23,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 00:49:23,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 00:49:23,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 00:49:23,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 00:49:23,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 00:49:23,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 00:49:23,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 00:49:23,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-04-16 00:49:23,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 00:49:23,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 00:49:23,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 00:49:23,629 INFO L142 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-04-16 00:49:23,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 00:49:23,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-04-16 00:49:23,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 00:49:23,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 00:49:23,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-04-16 00:49:23,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 00:49:23,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 00:49:23,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 00:49:23,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 00:49:23,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 00:49:23,666 INFO L142 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-04-16 00:49:23,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 00:49:23,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-04-16 00:49:23,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 00:49:23,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 00:49:23,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-04-16 00:49:23,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 00:49:23,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 00:49:23,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 00:49:23,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 00:49:23,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 00:49:23,694 INFO L142 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-04-16 00:49:23,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 00:49:23,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-04-16 00:49:23,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 00:49:23,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 00:49:23,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-04-16 00:49:23,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:49:23,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 00:49:23,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 00:49:23,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 00:49:23,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 00:49:23,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 00:49:23,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 00:49:23,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 00:49:23,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 00:49:23,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 00:49:23,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 00:49:23,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 00:49:23,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-04-16 00:49:23,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 00:49:23,776 INFO L142 QuantifierPusher]: treesize reduction 3, result has 93.2 percent of original size [2021-04-16 00:49:23,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 00:49:23,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 00:49:23,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 00:49:23,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 00:49:23,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-16 00:49:23,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 00:49:23,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:49:23,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860558379] [2021-04-16 00:49:23,795 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-04-16 00:49:23,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052580457] [2021-04-16 00:49:23,796 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2021-04-16 00:49:23,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-04-16 00:49:23,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-04-16 00:49:23,797 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-04-16 00:49:23,797 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-04-16 00:49:24,006 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-04-16 00:49:24,016 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-04-16 00:49:24,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 12:49:24 BoogieIcfgContainer [2021-04-16 00:49:24,016 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-16 00:49:24,017 INFO L168 Benchmark]: Toolchain (without parser) took 1658.56 ms. Allocated memory is still 199.2 MB. Free memory was 165.0 MB in the beginning and 80.1 MB in the end (delta: 84.8 MB). Peak memory consumption was 84.1 MB. Max. memory is 8.0 GB. [2021-04-16 00:49:24,017 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 199.2 MB. Free memory is still 181.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 00:49:24,017 INFO L168 Benchmark]: CACSL2BoogieTranslator took 164.00 ms. Allocated memory is still 199.2 MB. Free memory was 164.7 MB in the beginning and 183.3 MB in the end (delta: -18.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 8.0 GB. [2021-04-16 00:49:24,017 INFO L168 Benchmark]: Boogie Preprocessor took 30.57 ms. Allocated memory is still 199.2 MB. Free memory was 182.8 MB in the beginning and 181.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-04-16 00:49:24,018 INFO L168 Benchmark]: RCFGBuilder took 264.87 ms. Allocated memory is still 199.2 MB. Free memory was 181.2 MB in the beginning and 166.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-04-16 00:49:24,018 INFO L168 Benchmark]: TraceAbstraction took 1179.08 ms. Allocated memory is still 199.2 MB. Free memory was 166.0 MB in the beginning and 80.1 MB in the end (delta: 85.8 MB). Peak memory consumption was 86.0 MB. Max. memory is 8.0 GB. [2021-04-16 00:49:24,019 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 199.2 MB. Free memory is still 181.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 164.00 ms. Allocated memory is still 199.2 MB. Free memory was 164.7 MB in the beginning and 183.3 MB in the end (delta: -18.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.57 ms. Allocated memory is still 199.2 MB. Free memory was 182.8 MB in the beginning and 181.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 264.87 ms. Allocated memory is still 199.2 MB. Free memory was 181.2 MB in the beginning and 166.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1179.08 ms. Allocated memory is still 199.2 MB. Free memory was 166.0 MB in the beginning and 80.1 MB in the end (delta: 85.8 MB). Peak memory consumption was 86.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L20] unsigned a, b; [L21] unsigned x, y, u, v; [L22] a = __VERIFIER_nondet_unsigned_int() [L23] b = __VERIFIER_nondet_unsigned_int() [L24] CALL assume_abort_if_not(a >= 1) [L9] COND FALSE !(!cond) [L24] RET assume_abort_if_not(a >= 1) [L25] CALL assume_abort_if_not(b >= 1) [L9] COND FALSE !(!cond) [L25] RET assume_abort_if_not(b >= 1) [L27] CALL assume_abort_if_not(a <= 65535) [L9] COND FALSE !(!cond) [L27] RET assume_abort_if_not(a <= 65535) [L28] CALL assume_abort_if_not(b <= 65535) [L9] COND FALSE !(!cond) [L28] RET assume_abort_if_not(b <= 65535) [L30] x = a [L31] y = b [L32] u = b [L33] v = a [L35] COND TRUE 1 [L36] CALL __VERIFIER_assert(x*u + y*v == 2*a*b) [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 1123.3ms, OverallIterations: 2, TraceHistogramMax: 4, EmptinessCheckTime: 8.0ms, AutomataDifference: 115.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 29 SDtfs, 17 SDslu, 3 SDs, 0 SdLazy, 9 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 46.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 28.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.4ms SsaConstructionTime, 41.9ms SatisfiabilityAnalysisTime, 153.2ms InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 61 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 24/24 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...